100121222111210 has 16 divisors (see below), whose sum is σ = 180218631601800. Its totient is φ = 40048392888576.

The previous prime is 100121222111023. The next prime is 100121222111233. The reversal of 100121222111210 is 12111222121001.

It can be written as a sum of positive squares in 4 ways, for example, as 81238729642009 + 18882492469201 = 9013253^2 + 4345399^2 .

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, 7533155 + ... + 16030934.

Almost surely, 2^{100121222111210} is an apocalyptic number.

100121222111210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100121222111210 is a deficient number, since it is larger than the sum of its proper divisors (80097409490590).

100121222111210 is a wasteful number, since it uses less digits than its factorization.

100121222111210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23988985.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 100121222111210 its reverse (12111222121001), we get a palindrome (112232444232211).

The spelling of 100121222111210 in words is "one hundred trillion, one hundred twenty-one billion, two hundred twenty-two million, one hundred eleven thousand, two hundred ten".