1021212120122 has 8 divisors (see below), whose sum is σ = 1531825247316. Its totient is φ = 510603704352.

The previous prime is 1021212120109. The next prime is 1021212120143. The reversal of 1021212120122 is 2210212121201.

It can be written as a sum of positive squares in 2 ways, for example, as 1021189070521 + 23049601 = 1010539^2 + 4801^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1021212120122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 574073 + ... + 1540124.

Almost surely, 2^{1021212120122} is an apocalyptic number.

1021212120122 is a deficient number, since it is larger than the sum of its proper divisors (510613127194).

1021212120122 is a wasteful number, since it uses less digits than its factorization.

1021212120122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2355712.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1021212120122 its reverse (2210212121201), we get a palindrome (3231424241323).

It can be divided in two parts, 10212121201 and 22, that multiplied together give a palindrome (224666666422).

The spelling of 1021212120122 in words is "one trillion, twenty-one billion, two hundred twelve million, one hundred twenty thousand, one hundred twenty-two".