20002121101222 has 32 divisors (see below), whose sum is σ = 32510374299648. Its totient is φ = 9174821615136.

The previous prime is 20002121101217. The next prime is 20002121101243. The reversal of 20002121101222 is 22210112120002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20002121101196 and 20002121101205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 192789853 + ... + 192893575.

It is an arithmetic number, because the mean of its divisors is an integer number (1015949196864).

Almost surely, 2^{20002121101222} is an apocalyptic number.

20002121101222 is a deficient number, since it is larger than the sum of its proper divisors (12508253198426).

20002121101222 is a wasteful number, since it uses less digits than its factorization.

20002121101222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149404.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20002121101222 its reverse (22210112120002), we get a palindrome (42212233221224).

The spelling of 20002121101222 in words is "twenty trillion, two billion, one hundred twenty-one million, one hundred one thousand, two hundred twenty-two".