1031020220122 has 4 divisors (see below), whose sum is σ = 1546530330186. Its totient is φ = 515510110060.

The previous prime is 1031020220099. The next prime is 1031020220137. The reversal of 1031020220122 is 2210220201301.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 842630366601 + 188389853521 = 917949^2 + 434039^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1031020220096 and 1031020220105.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257755055029 + ... + 257755055032.

Almost surely, 2^{1031020220122} is an apocalyptic number.

1031020220122 is a deficient number, since it is larger than the sum of its proper divisors (515510110064).

1031020220122 is an equidigital number, since it uses as much as digits as its factorization.

1031020220122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515510110063.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 1031020220122 its reverse (2210220201301), we get a palindrome (3241240421423).

The spelling of 1031020220122 in words is "one trillion, thirty-one billion, twenty million, two hundred twenty thousand, one hundred twenty-two".