102212022001021 has 4 divisors (see below), whose sum is σ = 108224493883452. Its totient is φ = 96199550118592.

The previous prime is 102212022001007. The next prime is 102212022001027. The reversal of 102212022001021 is 120100220212201.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 49118371402500 + 53093650598521 = 7008450^2 + 7286539^2 .

It is a cyclic number.

It is not a de Polignac number, because 102212022001021 - 2¹¹ = 102212021998973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102212022000986 and 102212022001004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102212022001027) 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, 3006235941190 + ... + 3006235941223.

It is an arithmetic number, because the mean of its divisors is an integer number (27056123470863).

Almost surely, 2^{102212022001021} is an apocalyptic number.

It is an amenable number.

102212022001021 is a deficient number, since it is larger than the sum of its proper divisors (6012471882431).

102212022001021 is an equidigital number, since it uses as much as digits as its factorization.

102212022001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6012471882430.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 102212022001021 its reverse (120100220212201), we get a palindrome (222312242213222).

The spelling of 102212022001021 in words is "one hundred two trillion, two hundred twelve billion, twenty-two million, one thousand, twenty-one".