21120101222202 has 24 divisors (see below), whose sum is σ = 46996982000436. Its totient is φ = 6849762558336.

The previous prime is 21120101222189. The next prime is 21120101222219. The reversal of 21120101222202 is 20222210102112.

It is a happy number.

21120101222202 is a `hidden beast` number, since 21 + 120 + 101 + 222 + 202 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20909301783561 + 210799438641 = 4572669^2 + 459129^2 .

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, 15855931183 + ... + 15855932514.

Almost surely, 2^{21120101222202} is an apocalyptic number.

21120101222202 is an abundant number, since it is smaller than the sum of its proper divisors (25876880778234).

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

21120101222202 is a wasteful number, since it uses less digits than its factorization.

21120101222202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31711863742 (or 31711863739 counting only the distinct ones).

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

Adding to 21120101222202 its reverse (20222210102112), we get a palindrome (41342311324314).

The spelling of 21120101222202 in words is "twenty-one trillion, one hundred twenty billion, one hundred one million, two hundred twenty-two thousand, two hundred two".