1020221110031 has 2 divisors, whose sum is σ = 1020221110032. Its totient is φ = 1020221110030.

The previous prime is 1020221110021. The next prime is 1020221110079. The reversal of 1020221110031 is 1300111220201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1020221110031 - 2³⁰ = 1019147368207 is a prime.

It is a super-2 number, since 2×1020221110031² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1020221109988 and 1020221110015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020221110021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510110555015 + 510110555016.

It is an arithmetic number, because the mean of its divisors is an integer number (510110555016).

Almost surely, 2^{1020221110031} is an apocalyptic number.

1020221110031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020221110031 is an equidigital number, since it uses as much as digits as its factorization.

1020221110031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 1020221110031 its reverse (1300111220201), we get a palindrome (2320332330232).

The spelling of 1020221110031 in words is "one trillion, twenty billion, two hundred twenty-one million, one hundred ten thousand, thirty-one".