121122200211020 has 24 divisors (see below), whose sum is σ = 254365071251424. Its totient is φ = 48447270406656.

The previous prime is 121122200210989. The next prime is 121122200211043. The reversal of 121122200211020 is 20112002221121.

It is a self number, because there is not a number n which added to its sum of digits gives 121122200211020.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99987749 + ... + 101191868.

It is an arithmetic number, because the mean of its divisors is an integer number (10598544635476).

Almost surely, 2^{121122200211020} is an apocalyptic number.

121122200211020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121122200211020 is an abundant number, since it is smaller than the sum of its proper divisors (133242871040404).

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

121122200211020 is a wasteful number, since it uses less digits than its factorization.

121122200211020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201209729 (or 201209727 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121122200211020 its reverse (20112002221121), we get a palindrome (141234202432141).

The spelling of 121122200211020 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, two hundred million, two hundred eleven thousand, twenty".