102011222110021 has 4 divisors (see below), whose sum is σ = 116584253840032. Its totient is φ = 87438190380012.

The previous prime is 102011222110013. The next prime is 102011222110033. The reversal of 102011222110021 is 120011222110201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 102011222110021 - 2³ = 102011222110013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102011222109977 and 102011222110004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102011222110321) 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, 7286515864995 + ... + 7286515865008.

It is an arithmetic number, because the mean of its divisors is an integer number (29146063460008).

Almost surely, 2^{102011222110021} is an apocalyptic number.

It is an amenable number.

102011222110021 is a deficient number, since it is larger than the sum of its proper divisors (14573031730011).

102011222110021 is an equidigital number, since it uses as much as digits as its factorization.

102011222110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14573031730010.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 102011222110021 its reverse (120011222110201), we get a palindrome (222022444220222).

The spelling of 102011222110021 in words is "one hundred two trillion, eleven billion, two hundred twenty-two million, one hundred ten thousand, twenty-one".