22121100212002 has 64 divisors (see below), whose sum is σ = 37528376601600. Its totient is φ = 9693628084800.

The previous prime is 22121100211993. The next prime is 22121100212023. The reversal of 22121100212002 is 20021200112122.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17274733 + ... + 18511039.

It is an arithmetic number, because the mean of its divisors is an integer number (586380884400).

Almost surely, 2^{22121100212002} is an apocalyptic number.

22121100212002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22121100212002 is a deficient number, since it is larger than the sum of its proper divisors (15407276389598).

22121100212002 is a wasteful number, since it uses less digits than its factorization.

22121100212002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1236647.

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

Adding to 22121100212002 its reverse (20021200112122), we get a palindrome (42142300324124).

The spelling of 22121100212002 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred million, two hundred twelve thousand, two".