1221111133330 has 32 divisors (see below), whose sum is σ = 2438459225280. Its totient is φ = 436514301120.

The previous prime is 1221111133309. The next prime is 1221111133343. The reversal of 1221111133330 is 333311111221.

It is a super-2 number, since 2×1221111133330² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94069869 + ... + 94082848.

It is an arithmetic number, because the mean of its divisors is an integer number (76201850790).

Almost surely, 2^{1221111133330} is an apocalyptic number.

1221111133330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221111133330 is a deficient number, since it is larger than the sum of its proper divisors (1217348091950).

1221111133330 is a wasteful number, since it uses less digits than its factorization.

1221111133330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188152794.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 1221111133330 its reverse (333311111221), we get a palindrome (1554422244551).

The spelling of 1221111133330 in words is "one trillion, two hundred twenty-one billion, one hundred eleven million, one hundred thirty-three thousand, three hundred thirty".