102120200022021 has 16 divisors (see below), whose sum is σ = 137814715315200. Its totient is φ = 67253075270640.

The previous prime is 102120200022019. The next prime is 102120200022059. The reversal of 102120200022021 is 120220002021201.

It is not a de Polignac number, because 102120200022021 - 2¹ = 102120200022019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102120200022011) 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, 18316171 + ... + 23231928.

It is an arithmetic number, because the mean of its divisors is an integer number (8613419707200).

Almost surely, 2^{102120200022021} is an apocalyptic number.

It is an amenable number.

102120200022021 is a deficient number, since it is larger than the sum of its proper divisors (35694515293179).

102120200022021 is an equidigital number, since it uses as much as digits as its factorization.

102120200022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41558056.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 102120200022021 its reverse (120220002021201), we get a palindrome (222340202043222).

The spelling of 102120200022021 in words is "one hundred two trillion, one hundred twenty billion, two hundred million, twenty-two thousand, twenty-one".