20111201120090 has 64 divisors (see below), whose sum is σ = 38043049524480. Its totient is φ = 7646046696960.

The previous prime is 20111201120033. The next prime is 20111201120107. The reversal of 20111201120090 is 9002110211102.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5391827 + ... + 8324313.

It is an arithmetic number, because the mean of its divisors is an integer number (594422648820).

Almost surely, 2^{20111201120090} is an apocalyptic number.

20111201120090 is a deficient number, since it is larger than the sum of its proper divisors (17931848404390).

20111201120090 is a wasteful number, since it uses less digits than its factorization.

20111201120090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2932967.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 20111201120090 its reverse (9002110211102), we get a palindrome (29113311331192).

The spelling of 20111201120090 in words is "twenty trillion, one hundred eleven billion, two hundred one million, one hundred twenty thousand, ninety".