11211212122100 has 72 divisors (see below), whose sum is σ = 26233373040000. Its totient is φ = 4144838342400.

The previous prime is 11211212122069. The next prime is 11211212122129. The reversal of 11211212122100 is 122121211211.

It is a super-3 number, since 3×11211212122100³ (a number of 40 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71881100 + ... + 72036899.

Almost surely, 2^{11211212122100} is an apocalyptic number.

11211212122100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11211212122100 is an abundant number, since it is smaller than the sum of its proper divisors (15022160917900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11211212122100 is a wasteful number, since it uses less digits than its factorization.

11211212122100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143918073 (or 143918066 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11211212122100 its reverse (122121211211), we get a palindrome (11333333333311).

The spelling of 11211212122100 in words is "eleven trillion, two hundred eleven billion, two hundred twelve million, one hundred twenty-two thousand, one hundred".