1021200011211 has 16 divisors (see below), whose sum is σ = 1428153214464. Its totient is φ = 648306386784.

The previous prime is 1021200011207. The next prime is 1021200011213. The reversal of 1021200011211 is 1121100021201.

It is not a de Polignac number, because 1021200011211 - 2² = 1021200011207 is a prime.

1021200011211 is a modest number, since divided by 11211 gives 10212 as remainder.

It is not an unprimeable number, because it can be changed into a prime (1021200011213) 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, 97867125 + ... + 97877558.

It is an arithmetic number, because the mean of its divisors is an integer number (89259575904).

Almost surely, 2^{1021200011211} is an apocalyptic number.

1021200011211 is a deficient number, since it is larger than the sum of its proper divisors (406953203253).

1021200011211 is a wasteful number, since it uses less digits than its factorization.

1021200011211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195744770.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1021200011211 its reverse (1121100021201), we get a palindrome (2142300032412).

The spelling of 1021200011211 in words is "one trillion, twenty-one billion, two hundred million, eleven thousand, two hundred eleven".