1210221211010 has 128 divisors (see below), whose sum is σ = 2543296250880. Its totient is φ = 406093824000.

The previous prime is 1210221210943. The next prime is 1210221211021. The reversal of 1210221211010 is 101121220121.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 474409235 + ... + 474411785.

It is an arithmetic number, because the mean of its divisors is an integer number (19869501960).

Almost surely, 2^{1210221211010} is an apocalyptic number.

1210221211010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1210221211010 is an abundant number, since it is smaller than the sum of its proper divisors (1333075039870).

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

1210221211010 is a wasteful number, since it uses less digits than its factorization.

1210221211010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3412.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1210221211010 its reverse (101121220121), we get a palindrome (1311342431131).

The spelling of 1210221211010 in words is "one trillion, two hundred ten billion, two hundred twenty-one million, two hundred eleven thousand, ten".