22000001002 has 32 divisors (see below), whose sum is σ = 40306025088. Its totient is φ = 8791005696.

The previous prime is 22000000961. The next prime is 22000001003. The reversal of 22000001002 is 20010000022.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is not an unprimeable number, because it can be changed into a prime (22000001003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 406483 + ... + 457414.

It is an arithmetic number, because the mean of its divisors is an integer number (1259563284).

Almost surely, 2^22000001002 is an apocalyptic number.

22000001002 is a deficient number, since it is larger than the sum of its proper divisors (18306024086).

22000001002 is a wasteful number, since it uses less digits than its factorization.

22000001002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864030.

The product of its (nonzero) digits is 8, while the sum is 7.

Adding to 22000001002 its reverse (20010000022), we get a palindrome (42010001024).

The spelling of 22000001002 in words is "twenty-two billion, one thousand, two".