102220011 has 24 divisors (see below), whose sum is σ = 155361024. Its totient is φ = 64679040.

The previous prime is 102220007. The next prime is 102220039. The reversal of 102220011 is 110022201.

It is not a de Polignac number, because 102220011 - 2² = 102220007 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 102219975 and 102220002.

It is not an unprimeable number, because it can be changed into a prime (102220511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9910 + ... + 17396.

It is an arithmetic number, because the mean of its divisors is an integer number (6473376).

Almost surely, 2^102220011 is an apocalyptic number.

102220011 is a deficient number, since it is larger than the sum of its proper divisors (53141013).

102220011 is a wasteful number, since it uses less digits than its factorization.

102220011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7571 (or 7568 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 102220011 is about 10110.3912387207. The cubic root of 102220011 is about 467.5685674448.

Adding to 102220011 its reverse (110022201), we get a palindrome (212242212).

The spelling of 102220011 in words is "one hundred two million, two hundred twenty thousand, eleven".