20212120022202 has 24 divisors (see below), whose sum is σ = 45303027637140. Its totient is φ = 6505050121920.

The previous prime is 20212120022191. The next prime is 20212120022221. The reversal of 20212120022202 is 20222002121202.

It can be written as a sum of positive squares in 2 ways, for example, as 17721818253441 + 2490301768761 = 4209729^2 + 1578069^2 .

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, 19360267699 + ... + 19360268742.

Almost surely, 2^{20212120022202} is an apocalyptic number.

20212120022202 is an abundant number, since it is smaller than the sum of its proper divisors (25090907614938).

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

20212120022202 is a wasteful number, since it uses less digits than its factorization.

20212120022202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38720536478 (or 38720536475 counting only the distinct ones).

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

Adding to 20212120022202 its reverse (20222002121202), we get a palindrome (40434122143404).

The spelling of 20212120022202 in words is "twenty trillion, two hundred twelve billion, one hundred twenty million, twenty-two thousand, two hundred two".