22021121210002 has 8 divisors (see below), whose sum is σ = 33031791610812. Its totient is φ = 11010524006400.

The previous prime is 22021121209993. The next prime is 22021121210029. The reversal of 22021121210002 is 20001212112022.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20635841643561 + 1385279566441 = 4542669^2 + 1176979^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17540899 + ... + 18754342.

Almost surely, 2^{22021121210002} is an apocalyptic number.

22021121210002 is a deficient number, since it is larger than the sum of its proper divisors (11010670400810).

22021121210002 is a wasteful number, since it uses less digits than its factorization.

22021121210002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36598604.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22021121210002 its reverse (20001212112022), we get a palindrome (42022333322024).

The spelling of 22021121210002 in words is "twenty-two trillion, twenty-one billion, one hundred twenty-one million, two hundred ten thousand, two".