1101220211 has 32 divisors (see below), whose sum is σ = 1373718528. Its totient is φ = 859587840.

The previous prime is 1101220193. The next prime is 1101220247. The reversal of 1101220211 is 1120221011.

It is a cyclic number.

It is not a de Polignac number, because 1101220211 - 2¹⁴ = 1101203827 is a prime.

It is a super-2 number, since 2×1101220211² = 2425371906229769042, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1101220192 and 1101220201.

It is not an unprimeable number, because it can be changed into a prime (1101220261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3540746 + ... + 3541056.

It is an arithmetic number, because the mean of its divisors is an integer number (42928704).

Almost surely, 2^1101220211 is an apocalyptic number.

1101220211 is a deficient number, since it is larger than the sum of its proper divisors (272498317).

1101220211 is a wasteful number, since it uses less digits than its factorization.

1101220211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1101220211 is about 33184.6381779281. The cubic root of 1101220211 is about 1032.6616712406.

Adding to 1101220211 its reverse (1120221011), we get a palindrome (2221441222).

The spelling of 1101220211 in words is "one billion, one hundred one million, two hundred twenty thousand, two hundred eleven".