121012011210020 has 96 divisors (see below), whose sum is σ = 319006491955200. Its totient is φ = 37597193656704.

The previous prime is 121012011209959. The next prime is 121012011210061. The reversal of 121012011210020 is 20012110210121.

It is a super-2 number, since 2×121012011210020² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 121012011209977 and 121012011210004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 988922240 + ... + 989044599.

It is an arithmetic number, because the mean of its divisors is an integer number (3322984291200).

Almost surely, 2^{121012011210020} is an apocalyptic number.

121012011210020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121012011210020 is an abundant number, since it is smaller than the sum of its proper divisors (197994480745180).

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

121012011210020 is a wasteful number, since it uses less digits than its factorization.

121012011210020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1977966897 (or 1977966895 counting only the distinct ones).

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

Adding to 121012011210020 its reverse (20012110210121), we get a palindrome (141024121420141).

The spelling of 121012011210020 in words is "one hundred twenty-one trillion, twelve billion, eleven million, two hundred ten thousand, twenty".