10222121002 has 4 divisors (see below), whose sum is σ = 15333181506. Its totient is φ = 5111060500.

The previous prime is 10222120991. The next prime is 10222121053. The reversal of 10222121002 is 20012122201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20012122201 = 2857 ⋅7004593.

It can be written as a sum of positive squares in only one way, i.e., 5464018561 + 4758102441 = 73919^2 + 68979^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2555530249 + ... + 2555530252.

Almost surely, 2^10222121002 is an apocalyptic number.

10222121002 is a deficient number, since it is larger than the sum of its proper divisors (5111060504).

10222121002 is an equidigital number, since it uses as much as digits as its factorization.

10222121002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5111060503.

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

Adding to 10222121002 its reverse (20012122201), we get a palindrome (30234243203).

The spelling of 10222121002 in words is "ten billion, two hundred twenty-two million, one hundred twenty-one thousand, two".