11211121211010 has 32 divisors (see below), whose sum is σ = 30750503893632. Its totient is φ = 2562541991040.

The previous prime is 11211121210963. The next prime is 11211121211041. The reversal of 11211121211010 is 1011212111211.

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, 26693145531 + ... + 26693145950.

It is an arithmetic number, because the mean of its divisors is an integer number (960953246676).

Almost surely, 2^{11211121211010} is an apocalyptic number.

11211121211010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11211121211010 is an abundant number, since it is smaller than the sum of its proper divisors (19539382682622).

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

11211121211010 is a wasteful number, since it uses less digits than its factorization.

11211121211010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53386291498.

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

Adding to 11211121211010 its reverse (1011212111211), we get a palindrome (12222333322221).

The spelling of 11211121211010 in words is "eleven trillion, two hundred eleven billion, one hundred twenty-one million, two hundred eleven thousand, ten".