102121032311 has 4 divisors (see below), whose sum is σ = 102299878824. Its totient is φ = 101942185800.

The previous prime is 102121032283. The next prime is 102121032317. The reversal of 102121032311 is 113230121201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102121032311 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 102121032311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102121032317) 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, 89422400 + ... + 89423541.

It is an arithmetic number, because the mean of its divisors is an integer number (25574969706).

Almost surely, 2^102121032311 is an apocalyptic number.

102121032311 is a deficient number, since it is larger than the sum of its proper divisors (178846513).

102121032311 is an equidigital number, since it uses as much as digits as its factorization.

102121032311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178846512.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 102121032311 its reverse (113230121201), we get a palindrome (215351153512).

The spelling of 102121032311 in words is "one hundred two billion, one hundred twenty-one million, thirty-two thousand, three hundred eleven".