102211001210021 has 16 divisors (see below), whose sum is σ = 116556737740800. Its totient is φ = 88783452529200.

The previous prime is 102211001209997. The next prime is 102211001210033. The reversal of 102211001210021 is 120012100112201.

It is not a de Polignac number, because 102211001210021 - 2¹⁰ = 102211001208997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102211001209978 and 102211001210005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102211001210051) 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, 1897055381 + ... + 1897109258.

It is an arithmetic number, because the mean of its divisors is an integer number (7284796108800).

Almost surely, 2^{102211001210021} is an apocalyptic number.

102211001210021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102211001210021 is a deficient number, since it is larger than the sum of its proper divisors (14345736530779).

102211001210021 is a wasteful number, since it uses less digits than its factorization.

102211001210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3794164760.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 102211001210021 its reverse (120012100112201), we get a palindrome (222223101322222).

The spelling of 102211001210021 in words is "one hundred two trillion, two hundred eleven billion, one million, two hundred ten thousand, twenty-one".