21202022210012 has 24 divisors (see below), whose sum is σ = 42404185498080. Its totient is φ = 9086550716160.

The previous prime is 21202022209999. The next prime is 21202022210023. The reversal of 21202022210012 is 21001222020212.

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 7 ways as a sum of consecutive naturals, for example, 8683712 + ... + 10854072.

It is an arithmetic number, because the mean of its divisors is an integer number (1766841062420).

Almost surely, 2^{21202022210012} is an apocalyptic number.

It is an amenable number.

21202022210012 is an abundant number, since it is smaller than the sum of its proper divisors (21202163288068).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21202022210012 is a wasteful number, since it uses less digits than its factorization.

21202022210012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2519261 (or 2519259 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 21202022210012 its reverse (21001222020212), we get a palindrome (42203244230224).

The spelling of 21202022210012 in words is "twenty-one trillion, two hundred two billion, twenty-two million, two hundred ten thousand, twelve".