1011022221111 has 16 divisors (see below), whose sum is σ = 1576433320704. Its totient is φ = 564291471744.

The previous prime is 1011022221073. The next prime is 1011022221163. The reversal of 1011022221111 is 1111222201101.

It is a happy number.

It is not a de Polignac number, because 1011022221111 - 2⁶ = 1011022221047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011022220111) 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, 559812066 + ... + 559813871.

It is an arithmetic number, because the mean of its divisors is an integer number (98527082544).

Almost surely, 2^{1011022221111} is an apocalyptic number.

1011022221111 is a deficient number, since it is larger than the sum of its proper divisors (565411099593).

1011022221111 is a wasteful number, since it uses less digits than its factorization.

1011022221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1119625990.

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

Adding to 1011022221111 its reverse (1111222201101), we get a palindrome (2122244422212).

The spelling of 1011022221111 in words is "one trillion, eleven billion, twenty-two million, two hundred twenty-one thousand, one hundred eleven".