1021210211211 has 8 divisors (see below), whose sum is σ = 1362298883904. Its totient is φ = 680464173000.

The previous prime is 1021210211209. The next prime is 1021210211227. The reversal of 1021210211211 is 1121120121201.

It is a happy number.

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

It is not a de Polignac number, because 1021210211211 - 2¹ = 1021210211209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1021210211201) 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, 85651665 + ... + 85663586.

It is an arithmetic number, because the mean of its divisors is an integer number (170287360488).

Almost surely, 2^{1021210211211} is an apocalyptic number.

1021210211211 is a deficient number, since it is larger than the sum of its proper divisors (341088672693).

1021210211211 is a wasteful number, since it uses less digits than its factorization.

1021210211211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171317241.

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

Adding to 1021210211211 its reverse (1121120121201), we get a palindrome (2142330332412).

The spelling of 1021210211211 in words is "one trillion, twenty-one billion, two hundred ten million, two hundred eleven thousand, two hundred eleven".