10000021220122 has 4 divisors (see below), whose sum is σ = 15000031830186. Its totient is φ = 5000010610060.

The previous prime is 10000021220117. The next prime is 10000021220131. The reversal of 10000021220122 is 22102212000001.

It is a happy number.

10000021220122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 9820458005121 + 179563215001 = 3133761^2 + 423749^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2500005305029 + ... + 2500005305032.

Almost surely, 2^{10000021220122} is an apocalyptic number.

10000021220122 is a deficient number, since it is larger than the sum of its proper divisors (5000010610064).

10000021220122 is an equidigital number, since it uses as much as digits as its factorization.

10000021220122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5000010610063.

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

Adding to 10000021220122 its reverse (22102212000001), we get a palindrome (32102233220123).

The spelling of 10000021220122 in words is "ten trillion, twenty-one million, two hundred twenty thousand, one hundred twenty-two".