20122130222021 has 4 divisors (see below), whose sum is σ = 20227481689344. Its totient is φ = 20016778754700.

The previous prime is 20122130221961. The next prime is 20122130222059. The reversal of 20122130222021 is 12022203122102.

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-20122130222021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20122130221984 and 20122130222002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122130221021) 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, 52675733375 + ... + 52675733756.

It is an arithmetic number, because the mean of its divisors is an integer number (5056870422336).

Almost surely, 2^{20122130222021} is an apocalyptic number.

It is an amenable number.

20122130222021 is a deficient number, since it is larger than the sum of its proper divisors (105351467323).

20122130222021 is a wasteful number, since it uses less digits than its factorization.

20122130222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105351467322.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 20122130222021 its reverse (12022203122102), we get a palindrome (32144333344123).

The spelling of 20122130222021 in words is "twenty trillion, one hundred twenty-two billion, one hundred thirty million, two hundred twenty-two thousand, twenty-one".