20110211142 has 64 divisors (see below), whose sum is σ = 46576373760. Its totient is φ = 5670004896.

The previous prime is 20110211141. The next prime is 20110211197. The reversal of 20110211142 is 24111201102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110211141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 964633 + ... + 985259.

It is an arithmetic number, because the mean of its divisors is an integer number (727755840).

Almost surely, 2^20110211142 is an apocalyptic number.

20110211142 is an abundant number, since it is smaller than the sum of its proper divisors (26466162618).

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

20110211142 is a wasteful number, since it uses less digits than its factorization.

20110211142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20945.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20110211142 its reverse (24111201102), we get a palindrome (44221412244).

The spelling of 20110211142 in words is "twenty billion, one hundred ten million, two hundred eleven thousand, one hundred forty-two".