1221513052030 has 16 divisors (see below), whose sum is σ = 2231540263440. Its totient is φ = 481312605312.

The previous prime is 1221513052021. The next prime is 1221513052033. The reversal of 1221513052030 is 302503151221.

It is a junction number, because it is equal to n+sod(n) for n = 1221513051986 and 1221513052004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221513052033) 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, 911576235 + ... + 911577574.

It is an arithmetic number, because the mean of its divisors is an integer number (139471266465).

Almost surely, 2^{1221513052030} is an apocalyptic number.

1221513052030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221513052030 is a deficient number, since it is larger than the sum of its proper divisors (1010027211410).

1221513052030 is a wasteful number, since it uses less digits than its factorization.

1221513052030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1823153883.

The product of its (nonzero) digits is 1800, while the sum is 25.

The spelling of 1221513052030 in words is "one trillion, two hundred twenty-one billion, five hundred thirteen million, fifty-two thousand, thirty".