212020202121102 has 24 divisors (see below), whose sum is σ = 459377373073320. Its totient is φ = 70673359402800.

The previous prime is 212020202121089. The next prime is 212020202121107. The reversal of 212020202121102 is 201121202020212.

It is a happy number.

It is a super-2 number, since 2×212020202121102² (a number of 29 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212020202121107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55389849 + ... + 59093787.

It is an arithmetic number, because the mean of its divisors is an integer number (19140723878055).

Almost surely, 2^{212020202121102} is an apocalyptic number.

212020202121102 is an abundant number, since it is smaller than the sum of its proper divisors (247357170952218).

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

212020202121102 is a wasteful number, since it uses less digits than its factorization.

212020202121102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6884048 (or 6884045 counting only the distinct ones).

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

Adding to 212020202121102 its reverse (201121202020212), we get a palindrome (413141404141314).

The spelling of 212020202121102 in words is "two hundred twelve trillion, twenty billion, two hundred two million, one hundred twenty-one thousand, one hundred two".