102120020220122 has 4 divisors (see below), whose sum is σ = 153180030330186. Its totient is φ = 51060010110060.

The previous prime is 102120020220083. The next prime is 102120020220173. The reversal of 102120020220122 is 221022020021201.

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., 69957181849681 + 32162838370441 = 8364041^2 + 5671229^2 .

It is a super-2 number, since 2×102120020220122² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 102120020220122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25530005055029 + ... + 25530005055032.

Almost surely, 2^{102120020220122} is an apocalyptic number.

102120020220122 is a deficient number, since it is larger than the sum of its proper divisors (51060010110064).

102120020220122 is an equidigital number, since it uses as much as digits as its factorization.

102120020220122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51060010110063.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 102120020220122 its reverse (221022020021201), we get a palindrome (323142040241323).

The spelling of 102120020220122 in words is "one hundred two trillion, one hundred twenty billion, twenty million, two hundred twenty thousand, one hundred twenty-two".