20121100022002 has 32 divisors (see below), whose sum is σ = 35335416574080. Its totient is φ = 8412812565120.

The previous prime is 20121100021943. The next prime is 20121100022003. The reversal of 20121100022002 is 20022000112102.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20121100022003) 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, 26499748 + ... + 27248464.

It is an arithmetic number, because the mean of its divisors is an integer number (1104231767940).

Almost surely, 2^{20121100022002} is an apocalyptic number.

20121100022002 is a deficient number, since it is larger than the sum of its proper divisors (15214316552078).

20121100022002 is a wasteful number, since it uses less digits than its factorization.

20121100022002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795586.

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

Adding to 20121100022002 its reverse (20022000112102), we get a palindrome (40143100134104).

The spelling of 20121100022002 in words is "twenty trillion, one hundred twenty-one billion, one hundred million, twenty-two thousand, two".