121001201011020 has 96 divisors (see below), whose sum is σ = 370044199042560. Its totient is φ = 29298661749760.

The previous prime is 121001201011007. The next prime is 121001201011081. The reversal of 121001201011020 is 20110102100121.

It is a super-2 number, since 2×121001201011020² (a number of 29 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 = 121001201010987 and 121001201011005.

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, 108704397 + ... + 109811876.

It is an arithmetic number, because the mean of its divisors is an integer number (3854627073360).

Almost surely, 2^{121001201011020} is an apocalyptic number.

121001201011020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121001201011020 is an abundant number, since it is smaller than the sum of its proper divisors (249042998031540).

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

121001201011020 is a wasteful number, since it uses less digits than its factorization.

121001201011020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218517135 (or 218517133 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 121001201011020 its reverse (20110102100121), we get a palindrome (141111303111141).

The spelling of 121001201011020 in words is "one hundred twenty-one trillion, one billion, two hundred one million, eleven thousand, twenty".