102220020212021 has 32 divisors (see below), whose sum is σ = 111320028864000. Its totient is φ = 93508769958912.

The previous prime is 102220020211949. The next prime is 102220020212047. The reversal of 102220020212021 is 120212020022201.

It is a happy number.

It is not a de Polignac number, because 102220020212021 - 2¹⁴ = 102220020195637 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102220020212621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27949595 + ... + 31394583.

It is an arithmetic number, because the mean of its divisors is an integer number (3478750902000).

Almost surely, 2^{102220020212021} is an apocalyptic number.

It is an amenable number.

102220020212021 is a deficient number, since it is larger than the sum of its proper divisors (9100008651979).

102220020212021 is a wasteful number, since it uses less digits than its factorization.

102220020212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3445421.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 102220020212021 its reverse (120212020022201), we get a palindrome (222432040234222).

The spelling of 102220020212021 in words is "one hundred two trillion, two hundred twenty billion, twenty million, two hundred twelve thousand, twenty-one".