102101200222021 has 16 divisors (see below), whose sum is σ = 137086926173568. Its totient is φ = 73439424734400.

The previous prime is 102101200222009. The next prime is 102101200222051. The reversal of 102101200222021 is 120222002101201.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 102101200222021 - 2²⁵ = 102101166667589 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102101200221986 and 102101200222004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102101200222051) 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, 50999599510 + ... + 50999601511.

It is an arithmetic number, because the mean of its divisors is an integer number (8567932885848).

Almost surely, 2^{102101200222021} is an apocalyptic number.

102101200222021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102101200222021 is a deficient number, since it is larger than the sum of its proper divisors (34985725951547).

102101200222021 is a wasteful number, since it uses less digits than its factorization.

102101200222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101999201052.

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

Adding to 102101200222021 its reverse (120222002101201), we get a palindrome (222323202323222).

The spelling of 102101200222021 in words is "one hundred two trillion, one hundred one billion, two hundred million, two hundred twenty-two thousand, twenty-one".