20120021122 has 4 divisors (see below), whose sum is σ = 30180031686. Its totient is φ = 10060010560.

The previous prime is 20120021107. The next prime is 20120021137. The reversal of 20120021122 is 22112002102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (20120021107) and next prime (20120021137).

It can be written as a sum of positive squares in only one way, i.e., 16504283961 + 3615737161 = 128469^2 + 60131^2 .

It is a super-2 number, since 2×20120021122² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5030005279 + ... + 5030005282.

Almost surely, 2^20120021122 is an apocalyptic number.

20120021122 is a deficient number, since it is larger than the sum of its proper divisors (10060010564).

20120021122 is a wasteful number, since it uses less digits than its factorization.

20120021122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10060010563.

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

Adding to 20120021122 its reverse (22112002102), we get a palindrome (42232023224).

The spelling of 20120021122 in words is "twenty billion, one hundred twenty million, twenty-one thousand, one hundred twenty-two".