21222012121202 has 8 divisors (see below), whose sum is σ = 31848183990000. Its totient is φ = 10605950791204.

The previous prime is 21222012121171. The next prime is 21222012121231. The reversal of 21222012121202 is 20212121022212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21222012121202² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2527629452 + ... + 2527637847.

It is an arithmetic number, because the mean of its divisors is an integer number (3981022998750).

Almost surely, 2^{21222012121202} is an apocalyptic number.

21222012121202 is a deficient number, since it is larger than the sum of its proper divisors (10626171868798).

21222012121202 is a wasteful number, since it uses less digits than its factorization.

21222012121202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5055269400.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 21222012121202 its reverse (20212121022212), we get a palindrome (41434133143414).

The spelling of 21222012121202 in words is "twenty-one trillion, two hundred twenty-two billion, twelve million, one hundred twenty-one thousand, two hundred two".