21122021202201 has 16 divisors (see below), whose sum is σ = 31491194627200. Its totient is φ = 13991657354064.

The previous prime is 21122021202193. The next prime is 21122021202209. The reversal of 21122021202201 is 10220212022112.

It is a happy number.

21122021202201 is a `hidden beast` number, since 2 + 11 + 220 + 212 + 0 + 220 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (21122021202193) and next prime (21122021202209).

It is not a de Polignac number, because 21122021202201 - 2³ = 21122021202193 is a prime.

It is a super-2 number, since 2×21122021202201² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21122021202209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2491387741 + ... + 2491396218.

It is an arithmetic number, because the mean of its divisors is an integer number (1968199664200).

Almost surely, 2^{21122021202201} is an apocalyptic number.

It is an amenable number.

21122021202201 is a deficient number, since it is larger than the sum of its proper divisors (10369173424999).

21122021202201 is a wasteful number, since it uses less digits than its factorization.

21122021202201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4982784125 (or 4982784119 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 21122021202201 its reverse (10220212022112), we get a palindrome (31342233224313).

The spelling of 21122021202201 in words is "twenty-one trillion, one hundred twenty-two billion, twenty-one million, two hundred two thousand, two hundred one".