20220201021 has 16 divisors (see below), whose sum is σ = 27540105984. Its totient is φ = 13190344704.

The previous prime is 20220201017. The next prime is 20220201037. The reversal of 20220201021 is 12010202202.

It is not a de Polignac number, because 20220201021 - 2² = 20220201017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20220200988 and 20220201006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20220201011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 733341 + ... + 760413.

It is an arithmetic number, because the mean of its divisors is an integer number (1721256624).

Almost surely, 2^20220201021 is an apocalyptic number.

It is an amenable number.

20220201021 is a deficient number, since it is larger than the sum of its proper divisors (7319904963).

20220201021 is a wasteful number, since it uses less digits than its factorization.

20220201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32420.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20220201021 its reverse (12010202202), we get a palindrome (32230403223).

The spelling of 20220201021 in words is "twenty billion, two hundred twenty million, two hundred one thousand, twenty-one".