1211012020211 has 8 divisors (see below), whose sum is σ = 1386070226784. Its totient is φ = 1036467936000.

The previous prime is 1211012020151. The next prime is 1211012020223. The reversal of 1211012020211 is 1120202101121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1211012020211 - 2²⁶ = 1210944911347 is a prime.

It is a super-2 number, since 2×1211012020211² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211012020411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128525540 + ... + 128534961.

It is an arithmetic number, because the mean of its divisors is an integer number (173258778348).

Almost surely, 2^{1211012020211} is an apocalyptic number.

1211012020211 is a deficient number, since it is larger than the sum of its proper divisors (175058206573).

1211012020211 is an equidigital number, since it uses as much as digits as its factorization.

1211012020211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257061181.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1211012020211 its reverse (1120202101121), we get a palindrome (2331214121332).

The spelling of 1211012020211 in words is "one trillion, two hundred eleven billion, twelve million, twenty thousand, two hundred eleven".