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1213311331202 = 22326376333287
BaseRepresentation
bin10001101001111110111…
…111011010101110000010
311021222202202022210120012
4101221332333122232002
5124334330200044302
62325215412344522
7153441662102555
oct21517677325602
94258682283505
101213311331202
11428620685263
12177193615142
138a551323c49
1442a2037669c
1521863638a52
hex11a7efdab82

1213311331202 has 8 divisors (see below), whose sum is σ = 1899095996736. Its totient is φ = 580279332292.

The previous prime is 1213311331201. The next prime is 1213311331279. The reversal of 1213311331202 is 2021331133121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×12133113312023 (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (1213311331201) 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, 13188166598 + ... + 13188166689.

It is an arithmetic number, because the mean of its divisors is an integer number (237386999592).

Almost surely, 21213311331202 is an apocalyptic number.

1213311331202 is a deficient number, since it is larger than the sum of its proper divisors (685784665534).

1213311331202 is a wasteful number, since it uses less digits than its factorization.

1213311331202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26376333312.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1213311331202 its reverse (2021331133121), we get a palindrome (3234642464323).

The spelling of 1213311331202 in words is "one trillion, two hundred thirteen billion, three hundred eleven million, three hundred thirty-one thousand, two hundred two".

Divisors: 1 2 23 46 26376333287 52752666574 606655665601 1213311331202