102312021211019 has 4 divisors (see below), whose sum is σ = 102319755143760. Its totient is φ = 102304287278280.

The previous prime is 102312021211009. The next prime is 102312021211091. The reversal of 102312021211019 is 910112120213201.

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 102312021211019 - 2²⁸ = 102311752775563 is a prime.

It is a super-2 number, since 2×102312021211019² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102312021211009) 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, 3866946527 + ... + 3866972984.

It is an arithmetic number, because the mean of its divisors is an integer number (25579938785940).

Almost surely, 2^{102312021211019} is an apocalyptic number.

102312021211019 is a deficient number, since it is larger than the sum of its proper divisors (7733932741).

102312021211019 is an equidigital number, since it uses as much as digits as its factorization.

102312021211019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7733932740.

The product of its (nonzero) digits is 432, while the sum is 26.

The spelling of 102312021211019 in words is "one hundred two trillion, three hundred twelve billion, twenty-one million, two hundred eleven thousand, nineteen".