211221210001097 has 8 divisors (see below), whose sum is σ = 216957965917056. Its totient is φ = 205485931693872.

The previous prime is 211221210001091. The next prime is 211221210001211. The reversal of 211221210001097 is 790100012122112.

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 211221210001097 - 2⁶ = 211221210001033 is a prime.

It is a super-2 number, since 2×211221210001097² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211221210001091) 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, 369112403 + ... + 369684200.

It is an arithmetic number, because the mean of its divisors is an integer number (27119745739632).

Almost surely, 2^{211221210001097} is an apocalyptic number.

It is an amenable number.

211221210001097 is a deficient number, since it is larger than the sum of its proper divisors (5736755915959).

211221210001097 is an equidigital number, since it uses as much as digits as its factorization.

211221210001097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738804367.

The product of its (nonzero) digits is 1008, while the sum is 29.

The spelling of 211221210001097 in words is "two hundred eleven trillion, two hundred twenty-one billion, two hundred ten million, one thousand, ninety-seven".