121100211212020 has 48 divisors (see below), whose sum is σ = 254486311833600. Its totient is φ = 48406588661376.

The previous prime is 121100211212011. The next prime is 121100211212023. The reversal of 121100211212020 is 20212112001121.

It is a super-2 number, since 2×121100211212020² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121100211211985 and 121100211212003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121100211212023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 785049019 + ... + 785203261.

It is an arithmetic number, because the mean of its divisors is an integer number (5301798163200).

Almost surely, 2^{121100211212020} is an apocalyptic number.

121100211212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121100211212020 is an abundant number, since it is smaller than the sum of its proper divisors (133386100621580).

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

121100211212020 is a wasteful number, since it uses less digits than its factorization.

121100211212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181144 (or 181142 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121100211212020 its reverse (20212112001121), we get a palindrome (141312323213141).

The spelling of 121100211212020 in words is "one hundred twenty-one trillion, one hundred billion, two hundred eleven million, two hundred twelve thousand, twenty".