121210101012020 has 24 divisors (see below), whose sum is σ = 257061422150568. Its totient is φ = 48004000400000.

The previous prime is 121210101011983. The next prime is 121210101012041. The reversal of 121210101012020 is 20210101012121.

It can be written as a sum of positive squares in 4 ways, for example, as 47711097211684 + 73499003800336 = 6907322^2 + 8573156^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121210101011986 and 121210101012004.

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, 30002498231 + ... + 30002502270.

It is an arithmetic number, because the mean of its divisors is an integer number (10710892589607).

Almost surely, 2^{121210101012020} is an apocalyptic number.

121210101012020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121210101012020 is an abundant number, since it is smaller than the sum of its proper divisors (135851321138548).

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

121210101012020 is a wasteful number, since it uses less digits than its factorization.

121210101012020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60005000611 (or 60005000609 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121210101012020 its reverse (20210101012121), we get a palindrome (141420202024141).

It can be divided in two parts, 12121010101 and 2020, that added together give a palindrome (12121012121).

The spelling of 121210101012020 in words is "one hundred twenty-one trillion, two hundred ten billion, one hundred one million, twelve thousand, twenty".