220000002121012 has 12 divisors (see below), whose sum is σ = 385005727132516. Its totient is φ = 109998365797440.

The previous prime is 220000002120961. The next prime is 220000002121033. The reversal of 220000002121012 is 210121200000022.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 136840302911376 + 83159699209636 = 11697876^2 + 9119194^2 .

It is a junction number, because it is equal to n+sod(n) for n = 220000002120983 and 220000002121001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 408513039 + ... + 409051222.

Almost surely, 2^{220000002121012} is an apocalyptic number.

It is an amenable number.

220000002121012 is a deficient number, since it is larger than the sum of its proper divisors (165005725011504).

220000002121012 is a wasteful number, since it uses less digits than its factorization.

220000002121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817631538 (or 817631536 counting only the distinct ones).

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

Adding to 220000002121012 its reverse (210121200000022), we get a palindrome (430121202121034).

The spelling of 220000002121012 in words is "two hundred twenty trillion, two million, one hundred twenty-one thousand, twelve".