11101211212021 has 8 divisors (see below), whose sum is σ = 12689488304640. Its totient is φ = 9513531563568.

The previous prime is 11101211211991. The next prime is 11101211212027. The reversal of 11101211212021 is 12021211210111.

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 11101211212021 - 2¹⁹ = 11101210687733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11101211211986 and 11101211212004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11101211212027) 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, 149321221 + ... + 149395546.

It is an arithmetic number, because the mean of its divisors is an integer number (1586186038080).

Almost surely, 2^{11101211212021} is an apocalyptic number.

It is an amenable number.

11101211212021 is a deficient number, since it is larger than the sum of its proper divisors (1588277092619).

11101211212021 is an equidigital number, since it uses as much as digits as its factorization.

11101211212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298722083.

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

Adding to 11101211212021 its reverse (12021211210111), we get a palindrome (23122422422132).

The spelling of 11101211212021 in words is "eleven trillion, one hundred one billion, two hundred eleven million, two hundred twelve thousand, twenty-one".