1020121131 has 8 divisors (see below), whose sum is σ = 1360522240. Its totient is φ = 679900392.

The previous prime is 1020121111. The next prime is 1020121133. The reversal of 1020121131 is 1311210201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1020121131 - 2⁵ = 1020121099 is a prime.

It is a super-2 number, since 2×1020121131² = 2081294243825438322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020121133) 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, 31291 + ... + 54948.

It is an arithmetic number, because the mean of its divisors is an integer number (170065280).

Almost surely, 2^1020121131 is an apocalyptic number.

1020121131 is a deficient number, since it is larger than the sum of its proper divisors (340401109).

1020121131 is an equidigital number, since it uses as much as digits as its factorization.

1020121131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90185.

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

The square root of 1020121131 is about 31939.3351684095. The cubic root of 1020121131 is about 1006.6625554389.

Adding to 1020121131 its reverse (1311210201), we get a palindrome (2331331332).

The spelling of 1020121131 in words is "one billion, twenty million, one hundred twenty-one thousand, one hundred thirty-one".