121212110002 has 4 divisors (see below), whose sum is σ = 181818165006. Its totient is φ = 60606055000.

The previous prime is 121212109987. The next prime is 121212110009. The reversal of 121212110002 is 200011212121.

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., 108248238121 + 12963871881 = 329011^2 + 113859^2 .

It is a super-2 number, since 2×121212110002² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121212110009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30303027499 + ... + 30303027502.

Almost surely, 2^121212110002 is an apocalyptic number.

121212110002 is a deficient number, since it is larger than the sum of its proper divisors (60606055004).

121212110002 is an equidigital number, since it uses as much as digits as its factorization.

121212110002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60606055003.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121212110002 its reverse (200011212121), we get a palindrome (321223322123).

The spelling of 121212110002 in words is "one hundred twenty-one billion, two hundred twelve million, one hundred ten thousand, two".