11202121121220 has 120 divisors (see below), whose sum is σ = 35636419482048. Its totient is φ = 2945158574400.

The previous prime is 11202121121189. The next prime is 11202121121251. The reversal of 11202121121220 is 2212112120211.

11202121121220 is a `hidden beast` number, since 1 + 1 + 202 + 121 + 121 + 220 = 666.

It is an interprime number because it is at equal distance from previous prime (11202121121189) and next prime (11202121121251).

It is a super-2 number, since 2×11202121121220² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 11202121121193 and 11202121121202.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 48581386 + ... + 48811425.

Almost surely, 2^{11202121121220} is an apocalyptic number.

11202121121220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11202121121220 is an abundant number, since it is smaller than the sum of its proper divisors (24434298360828).

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

11202121121220 is a wasteful number, since it uses less digits than its factorization.

11202121121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97392903 (or 97392892 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 11202121121220 its reverse (2212112120211), we get a palindrome (13414233241431).

The spelling of 11202121121220 in words is "eleven trillion, two hundred two billion, one hundred twenty-one million, one hundred twenty-one thousand, two hundred twenty".