121202211012020 has 24 divisors (see below), whose sum is σ = 258323518398624. Its totient is φ = 47757289114656.

The previous prime is 121202211011983. The next prime is 121202211012121. The reversal of 121202211012020 is 20210112202121.

It is a self number, because there is not a number n which added to its sum of digits gives 121202211012020.

It is a congruent number.

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, 45224704262 + ... + 45224706941.

It is an arithmetic number, because the mean of its divisors is an integer number (10763479933276).

Almost surely, 2^{121202211012020} is an apocalyptic number.

121202211012020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121202211012020 is an abundant number, since it is smaller than the sum of its proper divisors (137121307386604).

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

121202211012020 is a wasteful number, since it uses less digits than its factorization.

121202211012020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90449411279 (or 90449411277 counting only the distinct ones).

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

Adding to 121202211012020 its reverse (20210112202121), we get a palindrome (141412323214141).

The spelling of 121202211012020 in words is "one hundred twenty-one trillion, two hundred two billion, two hundred eleven million, twelve thousand, twenty".