2012121011020 has 24 divisors (see below), whose sum is σ = 4328513981568. Its totient is φ = 785217955200.

The previous prime is 2012121011011. The next prime is 2012121011029. The reversal of 2012121011020 is 201101212102.

It is an interprime number because it is at equal distance from previous prime (2012121011011) and next prime (2012121011029).

It is a super-2 number, since 2×2012121011020² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2012121011029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1226902236 + ... + 1226903875.

It is an arithmetic number, because the mean of its divisors is an integer number (180354749232).

Almost surely, 2^{2012121011020} is an apocalyptic number.

2012121011020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2012121011020 is an abundant number, since it is smaller than the sum of its proper divisors (2316392970548).

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

2012121011020 is a wasteful number, since it uses less digits than its factorization.

2012121011020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2453806161 (or 2453806159 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2012121011020 its reverse (201101212102), we get a palindrome (2213222223122).

The spelling of 2012121011020 in words is "two trillion, twelve billion, one hundred twenty-one million, eleven thousand, twenty".