20221122021 has 8 divisors (see below), whose sum is σ = 27122942784. Its totient is φ = 13400024640.

The previous prime is 20221122013. The next prime is 20221122023. The reversal of 20221122021 is 12022112202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20221122021 - 2³ = 20221122013 is a prime.

It is a super-2 number, since 2×20221122021² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20221122023) 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 7 ways as a sum of consecutive naturals, for example, 20180260 + ... + 20181261.

It is an arithmetic number, because the mean of its divisors is an integer number (3390367848).

Almost surely, 2^20221122021 is an apocalyptic number.

It is an amenable number.

20221122021 is a deficient number, since it is larger than the sum of its proper divisors (6901820763).

20221122021 is a wasteful number, since it uses less digits than its factorization.

20221122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40361691.

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

Adding to 20221122021 its reverse (12022112202), we get a palindrome (32243234223).

The spelling of 20221122021 in words is "twenty billion, two hundred twenty-one million, one hundred twenty-two thousand, twenty-one".