22000002121012 has 6 divisors (see below), whose sum is σ = 38500003711778. Its totient is φ = 11000001060504.

The previous prime is 22000002121007. The next prime is 22000002121033. The reversal of 22000002121012 is 21012120000022.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 18134004627216 + 3865997493796 = 4258404^2 + 1966214^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22000002120983 and 22000002121001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2750000265123 + ... + 2750000265130.

Almost surely, 2^{22000002121012} is an apocalyptic number.

It is an amenable number.

22000002121012 is a deficient number, since it is larger than the sum of its proper divisors (16500001590766).

22000002121012 is a wasteful number, since it uses less digits than its factorization.

22000002121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5500000530257 (or 5500000530255 counting only the distinct ones).

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

Adding to 22000002121012 its reverse (21012120000022), we get a palindrome (43012122121034).

The spelling of 22000002121012 in words is "twenty-two trillion, two million, one hundred twenty-one thousand, twelve".