121011121002020 has 12 divisors (see below), whose sum is σ = 254123354104284. Its totient is φ = 48404448400800.

The previous prime is 121011121002019. The next prime is 121011121002059. The reversal of 121011121002020 is 20200121110121.

It can be written as a sum of positive squares in 2 ways, for example, as 35444328948196 + 85566792053824 = 5953514^2 + 9250232^2 .

It is a super-3 number, since 3×121011121002020³ (a number of 43 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121011121001986 and 121011121002004.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3025278025031 + ... + 3025278025070.

It is an arithmetic number, because the mean of its divisors is an integer number (21176946175357).

Almost surely, 2^{121011121002020} is an apocalyptic number.

121011121002020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121011121002020 is an abundant number, since it is smaller than the sum of its proper divisors (133112233102264).

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

121011121002020 is a wasteful number, since it uses less digits than its factorization.

121011121002020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6050556050110 (or 6050556050108 counting only the distinct ones).

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

Adding to 121011121002020 its reverse (20200121110121), we get a palindrome (141211242112141).

The spelling of 121011121002020 in words is "one hundred twenty-one trillion, eleven billion, one hundred twenty-one million, two thousand, twenty".