121011020011020 has 96 divisors (see below), whose sum is σ = 339089361311232. Its totient is φ = 32244990778368.

The previous prime is 121011020011001. The next prime is 121011020011109. The reversal of 121011020011020 is 20110020110121.

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 = 121011020010987 and 121011020011005.

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, 831372369 + ... + 831517911.

It is an arithmetic number, because the mean of its divisors is an integer number (3532180846992).

Almost surely, 2^{121011020011020} is an apocalyptic number.

121011020011020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121011020011020 is an abundant number, since it is smaller than the sum of its proper divisors (218078341300212).

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

121011020011020 is a wasteful number, since it uses less digits than its factorization.

121011020011020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156031 (or 156029 counting only the distinct ones).

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

Adding to 121011020011020 its reverse (20110020110121), we get a palindrome (141121040121141).

The spelling of 121011020011020 in words is "one hundred twenty-one trillion, eleven billion, twenty million, eleven thousand, twenty".