2020121356 has 48 divisors (see below), whose sum is σ = 4090988160. Its totient is φ = 862629120.

The previous prime is 2020121329. The next prime is 2020121357. The reversal of 2020121356 is 6531210202.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (2020121357) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 460831 + ... + 465193.

It is an arithmetic number, because the mean of its divisors is an integer number (85228920).

Almost surely, 2^2020121356 is an apocalyptic number.

It is an amenable number.

2020121356 is an abundant number, since it is smaller than the sum of its proper divisors (2070866804).

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

2020121356 is a wasteful number, since it uses less digits than its factorization.

2020121356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5014 (or 5012 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 2020121356 is about 44945.7601559925. The cubic root of 2020121356 is about 1264.1321790350.

Adding to 2020121356 its reverse (6531210202), we get a palindrome (8551331558).

The spelling of 2020121356 in words is "two billion, twenty million, one hundred twenty-one thousand, three hundred fifty-six".