1221013203010 has 16 divisors (see below), whose sum is σ = 2313498700800. Its totient is φ = 462699740016.

The previous prime is 1221013202999. The next prime is 1221013203013. The reversal of 1221013203010 is 103023101221.

It is not an unprimeable number, because it can be changed into a prime (1221013203013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3213192450 + ... + 3213192829.

It is an arithmetic number, because the mean of its divisors is an integer number (144593668800).

Almost surely, 2^{1221013203010} is an apocalyptic number.

1221013203010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221013203010 is a deficient number, since it is larger than the sum of its proper divisors (1092485497790).

1221013203010 is a wasteful number, since it uses less digits than its factorization.

1221013203010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6426385305.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 1221013203010 its reverse (103023101221), we get a palindrome (1324036304231).

The spelling of 1221013203010 in words is "one trillion, two hundred twenty-one billion, thirteen million, two hundred three thousand, ten".