100120100121010 has 16 divisors (see below), whose sum is σ = 182000498835672. Its totient is φ = 39651524800000.

The previous prime is 100120100121001. The next prime is 100120100121061. The reversal of 100120100121010 is 10121001021001.

It can be written as a sum of positive squares in 4 ways, for example, as 74444506503129 + 25675593617881 = 8628123^2 + 5067109^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

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, 49564404991 + ... + 49564407010.

Almost surely, 2^{100120100121010} is an apocalyptic number.

100120100121010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100120100121010 is a deficient number, since it is larger than the sum of its proper divisors (81880398714662).

100120100121010 is a wasteful number, since it uses less digits than its factorization.

100120100121010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99128812109.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 100120100121010 its reverse (10121001021001), we get a palindrome (110241101142011).

The spelling of 100120100121010 in words is "one hundred trillion, one hundred twenty billion, one hundred million, one hundred twenty-one thousand, ten".