1020212100231 has 4 divisors (see below), whose sum is σ = 1360282800312. Its totient is φ = 680141400152.

The previous prime is 1020212100223. The next prime is 1020212100239. The reversal of 1020212100231 is 1320012120201.

1020212100231 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1020212100223) and next prime (1020212100239).

It is a cyclic number.

It is not a de Polignac number, because 1020212100231 - 2³ = 1020212100223 is a prime.

It is a super-2 number, since 2×1020212100231² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1020212100231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020212100239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170035350036 + ... + 170035350041.

It is an arithmetic number, because the mean of its divisors is an integer number (340070700078).

Almost surely, 2^{1020212100231} is an apocalyptic number.

1020212100231 is a deficient number, since it is larger than the sum of its proper divisors (340070700081).

1020212100231 is an equidigital number, since it uses as much as digits as its factorization.

1020212100231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340070700080.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1020212100231 its reverse (1320012120201), we get a palindrome (2340224220432).

The spelling of 1020212100231 in words is "one trillion, twenty billion, two hundred twelve million, one hundred thousand, two hundred thirty-one".