20201211212202 has 24 divisors (see below), whose sum is σ = 44296631817984. Its totient is φ = 6652607707944.

The previous prime is 20201211212173. The next prime is 20201211212209. The reversal of 20201211212202 is 20221211210202.

It is a happy number.

20201211212202 is a `hidden beast` number, since 20 + 20 + 1 + 211 + 212 + 202 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (20201211212209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6760778698 + ... + 6760781685.

It is an arithmetic number, because the mean of its divisors is an integer number (1845692992416).

Almost surely, 2^{20201211212202} is an apocalyptic number.

20201211212202 is an abundant number, since it is smaller than the sum of its proper divisors (24095420605782).

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

20201211212202 is a wasteful number, since it uses less digits than its factorization.

20201211212202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13521560474 (or 13521560471 counting only the distinct ones).

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

Adding to 20201211212202 its reverse (20221211210202), we get a palindrome (40422422422404).

It can be divided in two parts, 2020121 and 1212202, that added together give a palindrome (3232323).

The spelling of 20201211212202 in words is "twenty trillion, two hundred one billion, two hundred eleven million, two hundred twelve thousand, two hundred two".