20121100022001 has 16 divisors (see below), whose sum is σ = 29267873788608. Its totient is φ = 12194264736000.

The previous prime is 20121100021943. The next prime is 20121100022003. The reversal of 20121100022001 is 10022000112102.

It is not a de Polignac number, because 20121100022001 - 2⁶ = 20121100021937 is a prime.

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, 7334116 + ... + 9696981.

It is an arithmetic number, because the mean of its divisors is an integer number (1829242111788).

Almost surely, 2^{20121100022001} is an apocalyptic number.

It is an amenable number.

20121100022001 is a deficient number, since it is larger than the sum of its proper divisors (9146773766607).

20121100022001 is a wasteful number, since it uses less digits than its factorization.

20121100022001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17066912.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20121100022001 its reverse (10022000112102), we get a palindrome (30143100134103).

The spelling of 20121100022001 in words is "twenty trillion, one hundred twenty-one billion, one hundred million, twenty-two thousand, one".