121030012020 has 96 divisors (see below), whose sum is σ = 341285003136. Its totient is φ = 32046796800.

The previous prime is 121030012013. The next prime is 121030012057. The reversal of 121030012020 is 20210030121.

121030012020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×121030012020² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 121030011987 and 121030012005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5005560 + ... + 5029680.

It is an arithmetic number, because the mean of its divisors is an integer number (3555052116).

Almost surely, 2^121030012020 is an apocalyptic number.

121030012020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121030012020 is an abundant number, since it is smaller than the sum of its proper divisors (220254991116).

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

121030012020 is a wasteful number, since it uses less digits than its factorization.

121030012020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24721 (or 24719 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 121030012020 its reverse (20210030121), we get a palindrome (141240042141).

The spelling of 121030012020 in words is "one hundred twenty-one billion, thirty million, twelve thousand, twenty".