11212100102021 has 48 divisors (see below), whose sum is σ = 14542791580800. Its totient is φ = 8557830594432.

The previous prime is 11212100102009. The next prime is 11212100102069. The reversal of 11212100102021 is 12020100121211.

It is not a de Polignac number, because 11212100102021 - 2²² = 11212095907717 is a prime.

It is a super-2 number, since 2×11212100102021² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11212100101987 and 11212100102005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212100105021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21223160 + ... + 21745038.

It is an arithmetic number, because the mean of its divisors is an integer number (302974824600).

Almost surely, 2^{11212100102021} is an apocalyptic number.

It is an amenable number.

11212100102021 is a deficient number, since it is larger than the sum of its proper divisors (3330691478779).

11212100102021 is a wasteful number, since it uses less digits than its factorization.

11212100102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523098 (or 523091 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11212100102021 its reverse (12020100121211), we get a palindrome (23232200223232).

The spelling of 11212100102021 in words is "eleven trillion, two hundred twelve billion, one hundred million, one hundred two thousand, twenty-one".