10102121231 has 4 divisors (see below), whose sum is σ = 10102323264. Its totient is φ = 10101919200.

The previous prime is 10102121173. The next prime is 10102121269. The reversal of 10102121231 is 13212120101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10102121231 - 2⁶ = 10102121167 is a prime.

It is a super-2 number, since 2×10102121231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10102121831) 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, 35351 + ... + 146471.

It is an arithmetic number, because the mean of its divisors is an integer number (2525580816).

Almost surely, 2^10102121231 is an apocalyptic number.

10102121231 is a deficient number, since it is larger than the sum of its proper divisors (202033).

10102121231 is an equidigital number, since it uses as much as digits as its factorization.

10102121231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202032.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 10102121231 its reverse (13212120101), we get a palindrome (23314241332).

The spelling of 10102121231 in words is "ten billion, one hundred two million, one hundred twenty-one thousand, two hundred thirty-one".