201101122092 has 72 divisors (see below), whose sum is σ = 509548780944. Its totient is φ = 61701758976.

The previous prime is 201101122091. The next prime is 201101122093. The reversal of 201101122092 is 290221101102.

It is an interprime number because it is at equal distance from previous prime (201101122091) and next prime (201101122093).

It is a super-2 number, since 2×201101122092² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201101122091) 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, 575428 + ... + 856340.

It is an arithmetic number, because the mean of its divisors is an integer number (7077066402).

Almost surely, 2^201101122092 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201101122092, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254774390472).

201101122092 is an abundant number, since it is smaller than the sum of its proper divisors (308447658852).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201101122092 is a wasteful number, since it uses less digits than its factorization.

201101122092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281299 (or 281284 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 201101122092 its reverse (290221101102), we get a palindrome (491322223194).

The spelling of 201101122092 in words is "two hundred one billion, one hundred one million, one hundred twenty-two thousand, ninety-two".