140121221210 has 16 divisors (see below), whose sum is σ = 252292681800. Its totient is φ = 56031936576.

The previous prime is 140121221203. The next prime is 140121221239. The reversal of 140121221210 is 12122121041.

It can be written as a sum of positive squares in 4 ways, for example, as 135719296801 + 4401924409 = 368401^2 + 66347^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2033405 + ... + 2101184.

Almost surely, 2^140121221210 is an apocalyptic number.

140121221210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140121221210 is a deficient number, since it is larger than the sum of its proper divisors (112171460590).

140121221210 is a wasteful number, since it uses less digits than its factorization.

140121221210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4137985.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 140121221210 its reverse (12122121041), we get a palindrome (152243342251).

The spelling of 140121221210 in words is "one hundred forty billion, one hundred twenty-one million, two hundred twenty-one thousand, two hundred ten".