10021121222 has 24 divisors (see below), whose sum is σ = 17658978480. Its totient is φ = 4252239600.

The previous prime is 10021121221. The next prime is 10021121251. The reversal of 10021121222 is 22212112001.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 10021121197 and 10021121206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021121221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 496322 + ... + 516117.

It is an arithmetic number, because the mean of its divisors is an integer number (735790770).

Almost surely, 2^10021121222 is an apocalyptic number.

10021121222 is a deficient number, since it is larger than the sum of its proper divisors (7637857258).

10021121222 is a wasteful number, since it uses less digits than its factorization.

10021121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012556 (or 1012549 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 10021121222 its reverse (22212112001), we get a palindrome (32233233223).

The spelling of 10021121222 in words is "ten billion, twenty-one million, one hundred twenty-one thousand, two hundred twenty-two".