10022121002 has 4 divisors (see below), whose sum is σ = 15033181506. Its totient is φ = 5011060500.

The previous prime is 10022120987. The next prime is 10022121029. The reversal of 10022121002 is 20012122001.

It is a happy number.

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., 7243882321 + 2778238681 = 85111^2 + 52709^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2505530249 + ... + 2505530252.

Almost surely, 2^10022121002 is an apocalyptic number.

10022121002 is a deficient number, since it is larger than the sum of its proper divisors (5011060504).

10022121002 is an equidigital number, since it uses as much as digits as its factorization.

10022121002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5011060503.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 10022121002 its reverse (20012122001), we get a palindrome (30034243003).

Subtracting 10022121002 from its reverse (20012122001), we obtain a palindrome (9990000999).

The spelling of 10022121002 in words is "ten billion, twenty-two million, one hundred twenty-one thousand, two".