200121022012 has 24 divisors (see below), whose sum is σ = 356200951680. Its totient is φ = 98351607360.

The previous prime is 200121022007. The next prime is 200121022021. The reversal of 200121022012 is 210220121002.

It is a happy number.

It is a super-2 number, since 2×200121022012² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 200121021983 and 200121022001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66138 + ... + 636094.

It is an arithmetic number, because the mean of its divisors is an integer number (14841706320).

Almost surely, 2^200121022012 is an apocalyptic number.

It is an amenable number.

200121022012 is a deficient number, since it is larger than the sum of its proper divisors (156079929668).

200121022012 is a wasteful number, since it uses less digits than its factorization.

200121022012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571461 (or 571459 counting only the distinct ones).

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

Adding to 200121022012 its reverse (210220121002), we get a palindrome (410341143014).

The spelling of 200121022012 in words is "two hundred billion, one hundred twenty-one million, twenty-two thousand, twelve".