20001212022101 has 8 divisors (see below), whose sum is σ = 21201901873560. Its totient is φ = 18803205278208.

The previous prime is 20001212022097. The next prime is 20001212022107. The reversal of 20001212022101 is 10122021210002.

It can be written as a sum of positive squares in 4 ways, for example, as 9316223958001 + 10684988064100 = 3052249^2 + 3268790^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 20001212022101 - 2² = 20001212022097 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001212022107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 670761536 + ... + 670791353.

It is an arithmetic number, because the mean of its divisors is an integer number (2650237734195).

Almost surely, 2^{20001212022101} is an apocalyptic number.

It is an amenable number.

20001212022101 is a deficient number, since it is larger than the sum of its proper divisors (1200689851459).

20001212022101 is a wasteful number, since it uses less digits than its factorization.

20001212022101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341553783.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20001212022101 its reverse (10122021210002), we get a palindrome (30123233232103).

The spelling of 20001212022101 in words is "twenty trillion, one billion, two hundred twelve million, twenty-two thousand, one hundred one".