10120021031 has 2 divisors, whose sum is σ = 10120021032. Its totient is φ = 10120021030.

The previous prime is 10120021013. The next prime is 10120021033. The reversal of 10120021031 is 13012002101.

Together with previous prime (10120021013) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10120021031 - 2¹⁰ = 10120020007 is a prime.

It is a super-2 number, since 2×10120021031² (a number of 21 digits) contains 22 as substring.

Together with 10120021033, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10120021033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060010515 + 5060010516.

It is an arithmetic number, because the mean of its divisors is an integer number (5060010516).

Almost surely, 2^10120021031 is an apocalyptic number.

10120021031 is a deficient number, since it is larger than the sum of its proper divisors (1).

10120021031 is an equidigital number, since it uses as much as digits as its factorization.

10120021031 is an evil number, because the sum of its binary digits is even.

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

Adding to 10120021031 its reverse (13012002101), we get a palindrome (23132023132).

The spelling of 10120021031 in words is "ten billion, one hundred twenty million, twenty-one thousand, thirty-one".