1221230103210 has 96 divisors (see below), whose sum is σ = 3599415106560. Its totient is φ = 284788877184.

The previous prime is 1221230103193. The next prime is 1221230103211. The reversal of 1221230103210 is 123010321221.

1221230103210 is a `hidden beast` number, since 1 + 221 + 230 + 1 + 0 + 3 + 210 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1221230103211) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 27445834 + ... + 27490293.

It is an arithmetic number, because the mean of its divisors is an integer number (37493907360).

Almost surely, 2^{1221230103210} is an apocalyptic number.

1221230103210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221230103210 is an abundant number, since it is smaller than the sum of its proper divisors (2378185003350).

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

1221230103210 is a wasteful number, since it uses less digits than its factorization.

1221230103210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54936172 (or 54936169 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1221230103210 its reverse (123010321221), we get a palindrome (1344240424431).

The spelling of 1221230103210 in words is "one trillion, two hundred twenty-one billion, two hundred thirty million, one hundred three thousand, two hundred ten".