20002121222 has 48 divisors (see below), whose sum is σ = 33114368160. Its totient is φ = 9019325952.

The previous prime is 20002121203. The next prime is 20002121231. The reversal of 20002121222 is 22212120002.

It is a junction number, because it is equal to n+sod(n) for n = 20002121197 and 20002121206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24303503 + ... + 24304325.

It is an arithmetic number, because the mean of its divisors is an integer number (689882670).

Almost surely, 2^20002121222 is an apocalyptic number.

20002121222 is a deficient number, since it is larger than the sum of its proper divisors (13112246938).

20002121222 is a wasteful number, since it uses less digits than its factorization.

20002121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1185 (or 1028 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20002121222 its reverse (22212120002), we get a palindrome (42214241224).

The spelling of 20002121222 in words is "twenty billion, two million, one hundred twenty-one thousand, two hundred twenty-two".