1210121310030 has 64 divisors (see below), whose sum is σ = 2947883597568. Its totient is φ = 317856211200.

The previous prime is 1210121310011. The next prime is 1210121310037. The reversal of 1210121310030 is 300131210121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 1210121309991 and 1210121310009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210121310037) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40589109 + ... + 40618911.

It is an arithmetic number, because the mean of its divisors is an integer number (46060681212).

Almost surely, 2^{1210121310030} is an apocalyptic number.

1210121310030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1210121310030 is an abundant number, since it is smaller than the sum of its proper divisors (1737762287538).

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

1210121310030 is a wasteful number, since it uses less digits than its factorization.

1210121310030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50081.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 1210121310030 its reverse (300131210121), we get a palindrome (1510252520151).

Subtracting from 1210121310030 its reverse (300131210121), we obtain a palindrome (909990099909).

The spelling of 1210121310030 in words is "one trillion, two hundred ten billion, one hundred twenty-one million, three hundred ten thousand, thirty".