11101210001001 has 60 divisors (see below), whose sum is σ = 17503946330112. Its totient is φ = 7010523200016.

The previous prime is 11101210000987. The next prime is 11101210001059. The reversal of 11101210001001 is 10010001210111.

It is not a de Polignac number, because 11101210001001 - 2⁷ = 11101210000873 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (11101210003001) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 396698656 + ... + 396726638.

Almost surely, 2^{11101210001001} is an apocalyptic number.

It is an amenable number.

11101210001001 is a deficient number, since it is larger than the sum of its proper divisors (6402736329111).

11101210001001 is a wasteful number, since it uses less digits than its factorization.

11101210001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41600 (or 41572 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 11101210001001 its reverse (10010001210111), we get a palindrome (21111211211112).

The spelling of 11101210001001 in words is "eleven trillion, one hundred one billion, two hundred ten million, one thousand, one".