1221233133010 has 48 divisors (see below), whose sum is σ = 2419162740288. Its totient is φ = 443544821280.

The previous prime is 1221233132993. The next prime is 1221233133011. The reversal of 1221233133010 is 103313321221.

It is a super-2 number, since 2×1221233133010² (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 not an unprimeable number, because it can be changed into a prime (1221233133011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 382657 + ... + 1609003.

It is an arithmetic number, because the mean of its divisors is an integer number (50399223756).

Almost surely, 2^{1221233133010} is an apocalyptic number.

1221233133010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221233133010 is a deficient number, since it is larger than the sum of its proper divisors (1197929607278).

1221233133010 is a wasteful number, since it uses less digits than its factorization.

1221233133010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227199 (or 1227188 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1221233133010 its reverse (103313321221), we get a palindrome (1324546454231).

The spelling of 1221233133010 in words is "one trillion, two hundred twenty-one billion, two hundred thirty-three million, one hundred thirty-three thousand, ten".