11220121020000 has 120 divisors (see below), whose sum is σ = 36804241166616. Its totient is φ = 2992032256000.

The previous prime is 11220121019993. The next prime is 11220121020007. The reversal of 11220121020000 is 2012102211.

It is an interprime number because it is at equal distance from previous prime (11220121019993) and next prime (11220121020007).

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×11220121020000² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220121020007) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 93441009 + ... + 93561008.

Almost surely, 2^{11220121020000} is an apocalyptic number.

11220121020000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11220121020000 is an abundant number, since it is smaller than the sum of its proper divisors (25584120146616).

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

11220121020000 is an equidigital number, since it uses as much as digits as its factorization.

11220121020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187002050 (or 187002027 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 11220121020000 its reverse (2012102211), we get a palindrome (11222133122211).

The spelling of 11220121020000 in words is "eleven trillion, two hundred twenty billion, one hundred twenty-one million, twenty thousand".