1021200122211 has 8 divisors (see below), whose sum is σ = 1398400167504. Its totient is φ = 662400079200.

The previous prime is 1021200122197. The next prime is 1021200122213. The reversal of 1021200122211 is 1122210021201.

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

It is not a de Polignac number, because 1021200122211 - 2⁷ = 1021200122083 is a prime.

It is a super-2 number, since 2×1021200122211² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1021200122213) 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, 4600000440 + ... + 4600000661.

It is an arithmetic number, because the mean of its divisors is an integer number (174800020938).

Almost surely, 2^{1021200122211} is an apocalyptic number.

1021200122211 is a deficient number, since it is larger than the sum of its proper divisors (377200045293).

1021200122211 is an equidigital number, since it uses as much as digits as its factorization.

1021200122211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9200001141.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1021200122211 its reverse (1122210021201), we get a palindrome (2143410143412).

It can be divided in two parts, 1021200 and 122211, that added together give a palindrome (1143411).

The spelling of 1021200122211 in words is "one trillion, twenty-one billion, two hundred million, one hundred twenty-two thousand, two hundred eleven".