20012001122 has 4 divisors (see below), whose sum is σ = 30018001686. Its totient is φ = 10006000560.

The previous prime is 20012001103. The next prime is 20012001133. The reversal of 20012001122 is 22110021002.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 18044280241 + 1967720881 = 134329^2 + 44359^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5003000279 + ... + 5003000282.

Almost surely, 2^20012001122 is an apocalyptic number.

20012001122 is a deficient number, since it is larger than the sum of its proper divisors (10006000564).

20012001122 is a wasteful number, since it uses less digits than its factorization.

20012001122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10006000563.

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

Adding to 20012001122 its reverse (22110021002), we get a palindrome (42122022124).

The spelling of 20012001122 in words is "twenty billion, twelve million, one thousand, one hundred twenty-two".