1011221210210 has 16 divisors (see below), whose sum is σ = 1838963109816. Its totient is φ = 400318499328.

The previous prime is 1011221210201. The next prime is 1011221210231. The reversal of 1011221210210 is 120121221101.

It can be written as a sum of positive squares in 4 ways, for example, as 869278387201 + 141942823009 = 932351^2 + 376753^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 521247077 + ... + 521249016.

Almost surely, 2^{1011221210210} is an apocalyptic number.

1011221210210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1011221210210 is a deficient number, since it is larger than the sum of its proper divisors (827741899606).

1011221210210 is a wasteful number, since it uses less digits than its factorization.

1011221210210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042496197.

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

Adding to 1011221210210 its reverse (120121221101), we get a palindrome (1131342431311).

The spelling of 1011221210210 in words is "one trillion, eleven billion, two hundred twenty-one million, two hundred ten thousand, two hundred ten".