10221021102122 has 4 divisors (see below), whose sum is σ = 15331531653186. Its totient is φ = 5110510551060.

The previous prime is 10221021102077. The next prime is 10221021102151. The reversal of 10221021102122 is 22120112012201.

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., 5512733022241 + 4708288079881 = 2347921^2 + 2169859^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 10221021102122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2555255275529 + ... + 2555255275532.

Almost surely, 2^{10221021102122} is an apocalyptic number.

10221021102122 is a deficient number, since it is larger than the sum of its proper divisors (5110510551064).

10221021102122 is an equidigital number, since it uses as much as digits as its factorization.

10221021102122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5110510551063.

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

Adding to 10221021102122 its reverse (22120112012201), we get a palindrome (32341133114323).

The spelling of 10221021102122 in words is "ten trillion, two hundred twenty-one billion, twenty-one million, one hundred two thousand, one hundred twenty-two".