102000220021001 has 4 divisors (see below), whose sum is σ = 102001223953104. Its totient is φ = 101999216088900.

The previous prime is 102000220020949. The next prime is 102000220021039. The reversal of 102000220021001 is 100120022000201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102000220021001 is a prime.

It is a super-2 number, since 2×102000220021001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102000220021061) 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, 501813635 + ... + 502016856.

It is an arithmetic number, because the mean of its divisors is an integer number (25500305988276).

Almost surely, 2^{102000220021001} is an apocalyptic number.

It is an amenable number.

102000220021001 is a deficient number, since it is larger than the sum of its proper divisors (1003932103).

102000220021001 is a wasteful number, since it uses less digits than its factorization.

102000220021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003932102.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 102000220021001 its reverse (100120022000201), we get a palindrome (202120242021202).

The spelling of 102000220021001 in words is "one hundred two trillion, two hundred twenty million, twenty-one thousand, one".