1211001113210 has 32 divisors (see below), whose sum is σ = 2491334917632. Its totient is φ = 415178277120.

The previous prime is 1211001113177. The next prime is 1211001113213. The reversal of 1211001113210 is 123111001121.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (1211001113213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 891890 + ... + 1793730.

It is an arithmetic number, because the mean of its divisors is an integer number (77854216176).

Almost surely, 2^{1211001113210} is an apocalyptic number.

1211001113210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211001113210 is an abundant number, since it is smaller than the sum of its proper divisors (1280333804422).

1211001113210 is a wasteful number, since it uses less digits than its factorization.

1211001113210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921038.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 1211001113210 its reverse (123111001121), we get a palindrome (1334112114331).

The spelling of 1211001113210 in words is "one trillion, two hundred eleven billion, one million, one hundred thirteen thousand, two hundred ten".