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10121213323 = 13778554871
BaseRepresentation
bin10010110110100010…
…10111010110001011
3222010100211220112201
421123101113112023
5131212012311243
64352152421031
7505545615364
oct113321272613
928110756481
1010121213323
114324185411
121b656a7777
13c53b4a730
146c02b6b6b
153e385304d
hex25b45758b

10121213323 has 4 divisors (see below), whose sum is σ = 10899768208. Its totient is φ = 9342658440.

The previous prime is 10121213293. The next prime is 10121213357. The reversal of 10121213323 is 32331212101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32331212101 = 122326435987.

It is a cyclic number.

It is not a de Polignac number, because 10121213323 - 29 = 10121212811 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10121213323.

It is not an unprimeable number, because it can be changed into a prime (10121223323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 389277423 + ... + 389277448.

It is an arithmetic number, because the mean of its divisors is an integer number (2724942052).

Almost surely, 210121213323 is an apocalyptic number.

10121213323 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

10121213323 is a deficient number, since it is larger than the sum of its proper divisors (778554885).

10121213323 is an equidigital number, since it uses as much as digits as its factorization.

10121213323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778554884.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 10121213323 its reverse (32331212101), we get a palindrome (42452425424).

The spelling of 10121213323 in words is "ten billion, one hundred twenty-one million, two hundred thirteen thousand, three hundred twenty-three".

Divisors: 1 13 778554871 10121213323