1121210222220 has 144 divisors (see below), whose sum is σ = 3761011511712. Its totient is φ = 268085099520.

The previous prime is 1121210222219. The next prime is 1121210222239. The reversal of 1121210222220 is 222220121211.

It is a happy number.

1121210222220 is a `hidden beast` number, since 1 + 1 + 212 + 10 + 222 + 220 = 666.

It is a super-2 number, since 2×1121210222220² (a number of 25 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 = 1121210222193 and 1121210222202.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3734007 + ... + 4023086.

It is an arithmetic number, because the mean of its divisors is an integer number (26118135498).

Almost surely, 2^{1121210222220} is an apocalyptic number.

1121210222220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121210222220 is an abundant number, since it is smaller than the sum of its proper divisors (2639801289492).

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

1121210222220 is a wasteful number, since it uses less digits than its factorization.

1121210222220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7757192 (or 7757187 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1121210222220 its reverse (222220121211), we get a palindrome (1343430343431).

The spelling of 1121210222220 in words is "one trillion, one hundred twenty-one billion, two hundred ten million, two hundred twenty-two thousand, two hundred twenty".