100212121021210 has 32 divisors (see below), whose sum is σ = 196804391729472. Its totient is φ = 36436284833280.

The previous prime is 100212121021153. The next prime is 100212121021211. The reversal of 100212121021210 is 12120121212001.

It is not an unprimeable number, because it can be changed into a prime (100212121021211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55182999 + ... + 56970058.

It is an arithmetic number, because the mean of its divisors is an integer number (6150137241546).

Almost surely, 2^{100212121021210} is an apocalyptic number.

100212121021210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100212121021210 is a deficient number, since it is larger than the sum of its proper divisors (96592270708262).

100212121021210 is a wasteful number, since it uses less digits than its factorization.

100212121021210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112161198.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 100212121021210 its reverse (12120121212001), we get a palindrome (112332242233211).

The spelling of 100212121021210 in words is "one hundred trillion, two hundred twelve billion, one hundred twenty-one million, twenty-one thousand, two hundred ten".