1121213333100 has 72 divisors (see below), whose sum is σ = 3707478761728. Its totient is φ = 256277332800.

The previous prime is 1121213333087. The next prime is 1121213333113. The reversal of 1121213333100 is 13333121211.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1121213333087) and next prime (1121213333113).

It is a super-2 number, since 2×1121213333100² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 266953456 + ... + 266957655.

Almost surely, 2^{1121213333100} is an apocalyptic number.

1121213333100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121213333100 is an abundant number, since it is smaller than the sum of its proper divisors (2586265428628).

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

1121213333100 is a wasteful number, since it uses less digits than its factorization.

1121213333100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533911135 (or 533911128 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1121213333100 its reverse (13333121211), we get a palindrome (1134546454311).

The spelling of 1121213333100 in words is "one trillion, one hundred twenty-one billion, two hundred thirteen million, three hundred thirty-three thousand, one hundred".