102021211211021 has 16 divisors (see below), whose sum is σ = 107562458016000. Its totient is φ = 96497257048128.

The previous prime is 102021211210987. The next prime is 102021211211033. The reversal of 102021211211021 is 120112112120201.

It is a cyclic number.

It is not a de Polignac number, because 102021211211021 - 2¹⁰ = 102021211209997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102021211211081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28511255 + ... + 31889403.

It is an arithmetic number, because the mean of its divisors is an integer number (6722653626000).

Almost surely, 2^{102021211211021} is an apocalyptic number.

It is an amenable number.

102021211211021 is a deficient number, since it is larger than the sum of its proper divisors (5541246804979).

102021211211021 is a wasteful number, since it uses less digits than its factorization.

102021211211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3380708.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 102021211211021 its reverse (120112112120201), we get a palindrome (222133323331222).

The spelling of 102021211211021 in words is "one hundred two trillion, twenty-one billion, two hundred eleven million, two hundred eleven thousand, twenty-one".