1012212210111 has 16 divisors (see below), whose sum is σ = 1376956859616. Its totient is φ = 661172593536.

The previous prime is 1012212210103. The next prime is 1012212210179. The reversal of 1012212210111 is 1110122122101.

It is a happy number.

It is not a de Polignac number, because 1012212210111 - 2³ = 1012212210103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012212211111) 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, 4225960 + ... + 4459053.

It is an arithmetic number, because the mean of its divisors is an integer number (86059803726).

Almost surely, 2^{1012212210111} is an apocalyptic number.

1012212210111 is a deficient number, since it is larger than the sum of its proper divisors (364744649505).

1012212210111 is an equidigital number, since it uses as much as digits as its factorization.

1012212210111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8685802.

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

Adding to 1012212210111 its reverse (1110122122101), we get a palindrome (2122334332212).

It can be divided in two parts, 10122122101 and 11, that multiplied together give a palindrome (111343343111).

The spelling of 1012212210111 in words is "one trillion, twelve billion, two hundred twelve million, two hundred ten thousand, one hundred eleven".