1221010123030 has 8 divisors (see below), whose sum is σ = 2197818221472. Its totient is φ = 488404049208.

The previous prime is 1221010123007. The next prime is 1221010123033. The reversal of 1221010123030 is 303210101221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1221010122995 and 1221010123013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221010123033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61050506142 + ... + 61050506161.

It is an arithmetic number, because the mean of its divisors is an integer number (274727277684).

Almost surely, 2^{1221010123030} is an apocalyptic number.

1221010123030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221010123030 is a deficient number, since it is larger than the sum of its proper divisors (976808098442).

1221010123030 is a wasteful number, since it uses less digits than its factorization.

1221010123030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122101012310.

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

Adding to 1221010123030 its reverse (303210101221), we get a palindrome (1524220224251).

The spelling of 1221010123030 in words is "one trillion, two hundred twenty-one billion, ten million, one hundred twenty-three thousand, thirty".