11211112121010 has 32 divisors (see below), whose sum is σ = 27275253603840. Its totient is φ = 2948676064128.

The previous prime is 11211112120987. The next prime is 11211112121021. The reversal of 11211112121010 is 1012121111211.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2559612450 + ... + 2559616829.

It is an arithmetic number, because the mean of its divisors is an integer number (852351675120).

Almost surely, 2^{11211112121010} is an apocalyptic number.

11211112121010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11211112121010 is an abundant number, since it is smaller than the sum of its proper divisors (16064141482830).

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

11211112121010 is a wasteful number, since it uses less digits than its factorization.

11211112121010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5119229362.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 11211112121010 its reverse (1012121111211), we get a palindrome (12223233232221).

The spelling of 11211112121010 in words is "eleven trillion, two hundred eleven billion, one hundred twelve million, one hundred twenty-one thousand, ten".