1001211211210 has 64 divisors (see below), whose sum is σ = 2221936572672. Its totient is φ = 316984052736.

The previous prime is 1001211211201. The next prime is 1001211211223. The reversal of 1001211211210 is 121121121001.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7874232 + ... + 8000371.

It is an arithmetic number, because the mean of its divisors is an integer number (34717758948).

Almost surely, 2^{1001211211210} is an apocalyptic number.

1001211211210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1001211211210 is an abundant number, since it is smaller than the sum of its proper divisors (1220725361462).

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

1001211211210 is a wasteful number, since it uses less digits than its factorization.

1001211211210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15874687.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1001211211210 its reverse (121121121001), we get a palindrome (1122332332211).

The spelling of 1001211211210 in words is "one trillion, one billion, two hundred eleven million, two hundred eleven thousand, two hundred ten".