1212202221120 has 1120 divisors, whose sum is σ = 4809386140416. Its totient is φ = 287362252800.

The previous prime is 1212202221101. The next prime is 1212202221137. The reversal of 1212202221120 is 211222022121.

It is a happy number.

1212202221120 is a `hidden beast` number, since 121 + 2 + 202 + 221 + 120 = 666.

It is a super-2 number, since 2×1212202221120² (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 = 1212202221093 and 1212202221102.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 4716740032 + ... + 4716740288.

Almost surely, 2^{1212202221120} is an apocalyptic number.

1212202221120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212202221120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2404693070208).

1212202221120 is an abundant number, since it is smaller than the sum of its proper divisors (3597183919296).

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

1212202221120 is a wasteful number, since it uses less digits than its factorization.

1212202221120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601 (or 582 counting only the distinct ones).

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

Adding to 1212202221120 its reverse (211222022121), we get a palindrome (1423424243241).

The spelling of 1212202221120 in words is "one trillion, two hundred twelve billion, two hundred two million, two hundred twenty-one thousand, one hundred twenty".