101200402021 has 16 divisors (see below), whose sum is σ = 105473088000. Its totient is φ = 97034260608.

The previous prime is 101200402001. The next prime is 101200402033. The reversal of 101200402021 is 120204002101.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 101200402021 - 2⁷ = 101200401893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101200401992 and 101200402010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101200402001) 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, 412240 + ... + 610198.

It is an arithmetic number, because the mean of its divisors is an integer number (6592068000).

Almost surely, 2^101200402021 is an apocalyptic number.

It is an amenable number.

101200402021 is a deficient number, since it is larger than the sum of its proper divisors (4272685979).

101200402021 is a wasteful number, since it uses less digits than its factorization.

101200402021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198228.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 101200402021 its reverse (120204002101), we get a palindrome (221404404122).

The spelling of 101200402021 in words is "one hundred one billion, two hundred million, four hundred two thousand, twenty-one".