11100121021210 has 16 divisors (see below), whose sum is σ = 21517157672136. Its totient is φ = 4098506223168.

The previous prime is 11100121021201. The next prime is 11100121021211. The reversal of 11100121021210 is 1212012100111.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8720805516201 + 2379315505009 = 2953101^2 + 1542503^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (11100121021211) 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, 42692773029 + ... + 42692773288.

Almost surely, 2^{11100121021210} is an apocalyptic number.

11100121021210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11100121021210 is a deficient number, since it is larger than the sum of its proper divisors (10417036650926).

11100121021210 is a wasteful number, since it uses less digits than its factorization.

11100121021210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85385546337.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11100121021210 its reverse (1212012100111), we get a palindrome (12312133121321).

The spelling of 11100121021210 in words is "eleven trillion, one hundred billion, one hundred twenty-one million, twenty-one thousand, two hundred ten".