1211000210010 has 64 divisors (see below), whose sum is σ = 3229575701760. Its totient is φ = 322909208640.

The previous prime is 1211000209987. The next prime is 1211000210027. The reversal of 1211000210010 is 100120001121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1211000209974 and 1211000210001.

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, 3600955 + ... + 3922865.

It is an arithmetic number, because the mean of its divisors is an integer number (50462120340).

Almost surely, 2^{1211000210010} is an apocalyptic number.

1211000210010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211000210010 is an abundant number, since it is smaller than the sum of its proper divisors (2018575491750).

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

1211000210010 is a wasteful number, since it uses less digits than its factorization.

1211000210010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335860 (or 335854 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1211000210010 its reverse (100120001121), we get a palindrome (1311120211131).

The spelling of 1211000210010 in words is "one trillion, two hundred eleven billion, two hundred ten thousand, ten".