21202122022002 has 24 divisors (see below), whose sum is σ = 45942228343440. Its totient is φ = 7066712884920.

The previous prime is 21202122021907. The next prime is 21202122022013. The reversal of 21202122022002 is 20022022120212.

21202122022002 is a `hidden beast` number, since 21 + 202 + 1 + 220 + 220 + 0 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54895752 + ... + 55280627.

It is an arithmetic number, because the mean of its divisors is an integer number (1914259514310).

Almost surely, 2^{21202122022002} is an apocalyptic number.

21202122022002 is an abundant number, since it is smaller than the sum of its proper divisors (24740106321438).

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

21202122022002 is a wasteful number, since it uses less digits than its factorization.

21202122022002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110187078 (or 110187075 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 21202122022002 its reverse (20022022120212), we get a palindrome (41224144142214).

The spelling of 21202122022002 in words is "twenty-one trillion, two hundred two billion, one hundred twenty-two million, twenty-two thousand, two".