121202020221012 has 36 divisors (see below), whose sum is σ = 324393642357876. Its totient is φ = 38024163206400.

The previous prime is 121202020220993. The next prime is 121202020221053. The reversal of 121202020221012 is 210122020202121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 66966660755856 + 54235359465156 = 8183316^2 + 7364466^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

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, 99021257739 + ... + 99021258962.

It is an arithmetic number, because the mean of its divisors is an integer number (9010934509941).

Almost surely, 2^{121202020221012} is an apocalyptic number.

121202020221012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121202020221012 is an abundant number, since it is smaller than the sum of its proper divisors (203191622136864).

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

121202020221012 is a wasteful number, since it uses less digits than its factorization.

121202020221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198042516728 (or 198042516723 counting only the distinct ones).

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

Adding to 121202020221012 its reverse (210122020202121), we get a palindrome (331324040423133).

The spelling of 121202020221012 in words is "one hundred twenty-one trillion, two hundred two billion, twenty million, two hundred twenty-one thousand, twelve".