20002121212102 has 32 divisors (see below), whose sum is σ = 31014874598400. Its totient is φ = 9669046365888.

The previous prime is 20002121212097. The next prime is 20002121212127. The reversal of 20002121212102 is 20121212120002.

It is a happy number.

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, 59431674 + ... + 59767282.

It is an arithmetic number, because the mean of its divisors is an integer number (969214831200).

Almost surely, 2^{20002121212102} is an apocalyptic number.

20002121212102 is a deficient number, since it is larger than the sum of its proper divisors (11012753386298).

20002121212102 is a wasteful number, since it uses less digits than its factorization.

20002121212102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343380.

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

Adding to 20002121212102 its reverse (20121212120002), we get a palindrome (40123333332104).

The spelling of 20002121212102 in words is "twenty trillion, two billion, one hundred twenty-one million, two hundred twelve thousand, one hundred two".