100211011021221 has 8 divisors (see below), whose sum is σ = 140647033012320. Its totient is φ = 63291164855472.

The previous prime is 100211011021207. The next prime is 100211011021273. The reversal of 100211011021221 is 122120110112001.

It is a happy number.

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

It is not a de Polignac number, because 100211011021221 - 2⁹ = 100211011020709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100211011021221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100211011061221) 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, 879043956270 + ... + 879043956383.

It is an arithmetic number, because the mean of its divisors is an integer number (17580879126540).

Almost surely, 2^{100211011021221} is an apocalyptic number.

It is an amenable number.

100211011021221 is a deficient number, since it is larger than the sum of its proper divisors (40436021991099).

100211011021221 is a wasteful number, since it uses less digits than its factorization.

100211011021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1758087912675.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 100211011021221 its reverse (122120110112001), we get a palindrome (222331121133222).

The spelling of 100211011021221 in words is "one hundred trillion, two hundred eleven billion, eleven million, twenty-one thousand, two hundred twenty-one".