120101020031 has 4 divisors (see below), whose sum is σ = 122136630600. Its totient is φ = 118065409464.

The previous prime is 120101020027. The next prime is 120101020219. The reversal of 120101020031 is 130020101021.

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

It is a cyclic number.

It is not a de Polignac number, because 120101020031 - 2² = 120101020027 is a prime.

It is a super-2 number, since 2×120101020031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120101019994 and 120101020021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120101020531) 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, 1017805196 + ... + 1017805313.

It is an arithmetic number, because the mean of its divisors is an integer number (30534157650).

Almost surely, 2^120101020031 is an apocalyptic number.

120101020031 is a deficient number, since it is larger than the sum of its proper divisors (2035610569).

120101020031 is an equidigital number, since it uses as much as digits as its factorization.

120101020031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2035610568.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 120101020031 its reverse (130020101021), we get a palindrome (250121121052).

The spelling of 120101020031 in words is "one hundred twenty billion, one hundred one million, twenty thousand, thirty-one".