1212211002210 has 64 divisors (see below), whose sum is σ = 3186202642560. Its totient is φ = 293332930560.

The previous prime is 1212211002199. The next prime is 1212211002217. The reversal of 1212211002210 is 122001122121.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1212211002210.

It is not an unprimeable number, because it can be changed into a prime (1212211002217) 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, 26317951 + ... + 26363970.

It is an arithmetic number, because the mean of its divisors is an integer number (49784416290).

Almost surely, 2^{1212211002210} is an apocalyptic number.

1212211002210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212211002210 is an abundant number, since it is smaller than the sum of its proper divisors (1973991640350).

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

1212211002210 is a wasteful number, since it uses less digits than its factorization.

1212211002210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52682003.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1212211002210 its reverse (122001122121), we get a palindrome (1334212124331).

The spelling of 1212211002210 in words is "one trillion, two hundred twelve billion, two hundred eleven million, two thousand, two hundred ten".