1020120202020 has 48 divisors (see below), whose sum is σ = 2884617142848. Its totient is φ = 269338665600.

The previous prime is 1020120201973. The next prime is 1020120202043. The reversal of 1020120202020 is 202020210201.

It is a super-2 number, since 2×1020120202020² (a number of 25 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 = 1020120201987 and 1020120202005.

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 15 ways as a sum of consecutive naturals, for example, 84162274 + ... + 84174393.

It is an arithmetic number, because the mean of its divisors is an integer number (60096190476).

Almost surely, 2^{1020120202020} is an apocalyptic number.

1020120202020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020120202020 is an abundant number, since it is smaller than the sum of its proper divisors (1864496940828).

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

1020120202020 is a wasteful number, since it uses less digits than its factorization.

1020120202020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168336780 (or 168336778 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 1020120202020 its reverse (202020210201), we get a palindrome (1222140412221).

The spelling of 1020120202020 in words is "one trillion, twenty billion, one hundred twenty million, two hundred two thousand, twenty".