1211001100010 has 32 divisors (see below), whose sum is σ = 2348375358672. Its totient is φ = 446968143360.

The previous prime is 1211001099977. The next prime is 1211001100021. The reversal of 1211001100010 is 100011001121.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 374520744361 + 836480355649 = 611981^2 + 914593^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1436339 + ... + 2117798.

Almost surely, 2^{1211001100010} is an apocalyptic number.

1211001100010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211001100010 is a deficient number, since it is larger than the sum of its proper divisors (1137374258662).

1211001100010 is a wasteful number, since it uses less digits than its factorization.

1211001100010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3556778.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 1211001100010 its reverse (100011001121), we get a palindrome (1311012101131).

The spelling of 1211001100010 in words is "one trillion, two hundred eleven billion, one million, one hundred thousand, ten".