1001211220210 has 16 divisors (see below), whose sum is σ = 1813659053976. Its totient is φ = 397933630848.

The previous prime is 1001211220193. The next prime is 1001211220249. The reversal of 1001211220210 is 120221121001.

It can be written as a sum of positive squares in 4 ways, for example, as 969797557089 + 31413663121 = 984783^2 + 177239^2 .

It is a super-2 number, since 2×1001211220210² (a number of 25 digits) contains 22 as substring.

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, 318855507 + ... + 318858646.

Almost surely, 2^{1001211220210} is an apocalyptic number.

1001211220210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1001211220210 is a deficient number, since it is larger than the sum of its proper divisors (812447833766).

1001211220210 is a wasteful number, since it uses less digits than its factorization.

1001211220210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637714317.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1001211220210 its reverse (120221121001), we get a palindrome (1121432341211).

The spelling of 1001211220210 in words is "one trillion, one billion, two hundred eleven million, two hundred twenty thousand, two hundred ten".