100000212121202 has 4 divisors (see below), whose sum is σ = 150000318181806. Its totient is φ = 50000106060600.

The previous prime is 100000212121189. The next prime is 100000212121261. The reversal of 100000212121202 is 202121212000001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 53006568474721 + 46993643646481 = 7280561^2 + 6855191^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25000053030299 + ... + 25000053030302.

Almost surely, 2^{100000212121202} is an apocalyptic number.

100000212121202 is a deficient number, since it is larger than the sum of its proper divisors (50000106060604).

100000212121202 is an equidigital number, since it uses as much as digits as its factorization.

100000212121202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50000106060603.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 100000212121202 its reverse (202121212000001), we get a palindrome (302121424121203).

The spelling of 100000212121202 in words is "one hundred trillion, two hundred twelve million, one hundred twenty-one thousand, two hundred two".