102121101431 has 4 divisors (see below), whose sum is σ = 102200947200. Its totient is φ = 102041255664.

The previous prime is 102121101427. The next prime is 102121101473. The reversal of 102121101431 is 134101121201.

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 102121101431 - 2² = 102121101427 is a prime.

It is a super-2 number, since 2×102121101431² (a number of 23 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 (102121106431) 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, 39920966 + ... + 39923523.

It is an arithmetic number, because the mean of its divisors is an integer number (25550236800).

Almost surely, 2^102121101431 is an apocalyptic number.

102121101431 is a deficient number, since it is larger than the sum of its proper divisors (79845769).

102121101431 is an equidigital number, since it uses as much as digits as its factorization.

102121101431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79845768.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 102121101431 its reverse (134101121201), we get a palindrome (236222222632).

The spelling of 102121101431 in words is "one hundred two billion, one hundred twenty-one million, one hundred one thousand, four hundred thirty-one".