1020102020122 has 4 divisors (see below), whose sum is σ = 1530153030186. Its totient is φ = 510051010060.

The previous prime is 1020102020059. The next prime is 1020102020129. The reversal of 1020102020122 is 2210202010201.

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., 1020102020001 + 121 = 1010001^2 + 11^2 .

It is not an unprimeable number, because it can be changed into a prime (1020102020129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255025505029 + ... + 255025505032.

Almost surely, 2^{1020102020122} is an apocalyptic number.

1020102020122 is a deficient number, since it is larger than the sum of its proper divisors (510051010064).

1020102020122 is an equidigital number, since it uses as much as digits as its factorization.

1020102020122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510051010063.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1020102020122 its reverse (2210202010201), we get a palindrome (3230304030323).

The spelling of 1020102020122 in words is "one trillion, twenty billion, one hundred two million, twenty thousand, one hundred twenty-two".