21121012022201 has 8 divisors (see below), whose sum is σ = 25995091719744. Its totient is φ = 16711130391120.

The previous prime is 21121012022197. The next prime is 21121012022221. The reversal of 21121012022201 is 10222021012112.

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 21121012022201 - 2² = 21121012022197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21121012022201.

It is not an unprimeable number, because it can be changed into a prime (21121012022221) 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, 116049516515 + ... + 116049516696.

It is an arithmetic number, because the mean of its divisors is an integer number (3249386464968).

Almost surely, 2^{21121012022201} is an apocalyptic number.

It is an amenable number.

21121012022201 is a deficient number, since it is larger than the sum of its proper divisors (4874079697543).

21121012022201 is a wasteful number, since it uses less digits than its factorization.

21121012022201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232099033231.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21121012022201 its reverse (10222021012112), we get a palindrome (31343033034313).

The spelling of 21121012022201 in words is "twenty-one trillion, one hundred twenty-one billion, twelve million, twenty-two thousand, two hundred one".