1210211021211 has 16 divisors (see below), whose sum is σ = 1614624325920. Its totient is φ = 806302667520.

The previous prime is 1210211021209. The next prime is 1210211021219. The reversal of 1210211021211 is 1121201120121.

It is a happy number.

It is not a de Polignac number, because 1210211021211 - 2¹ = 1210211021209 is a prime.

It is a super-2 number, since 2×1210211021211² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1210211021219) 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, 50185425 + ... + 50209533.

It is an arithmetic number, because the mean of its divisors is an integer number (100914020370).

Almost surely, 2^{1210211021211} is an apocalyptic number.

1210211021211 is a deficient number, since it is larger than the sum of its proper divisors (404413304709).

1210211021211 is a wasteful number, since it uses less digits than its factorization.

1210211021211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33886.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1210211021211 its reverse (1121201120121), we get a palindrome (2331412141332).

The spelling of 1210211021211 in words is "one trillion, two hundred ten billion, two hundred eleven million, twenty-one thousand, two hundred eleven".