20110201092 has 18 divisors (see below), whose sum is σ = 50834119518. Its totient is φ = 6703400352.

The previous prime is 20110201079. The next prime is 20110201127. The reversal of 20110201092 is 29010201102.

It can be written as a sum of positive squares in only one way, i.e., 19037376576 + 1072824516 = 137976^2 + 32754^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 279308313 + ... + 279308384.

It is an arithmetic number, because the mean of its divisors is an integer number (2824117751).

Almost surely, 2^20110201092 is an apocalyptic number.

It is an amenable number.

20110201092 is an abundant number, since it is smaller than the sum of its proper divisors (30723918426).

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

20110201092 is a wasteful number, since it uses less digits than its factorization.

20110201092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558616707 (or 558616702 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 20110201092 its reverse (29010201102), we get a palindrome (49120402194).

The spelling of 20110201092 in words is "twenty billion, one hundred ten million, two hundred one thousand, ninety-two".