1212001210099 has 16 divisors (see below), whose sum is σ = 1258263383040. Its totient is φ = 1166188716000.

The previous prime is 1212001210067. The next prime is 1212001210103. The reversal of 1212001210099 is 9900121002121.

It is a cyclic number.

It is not a de Polignac number, because 1212001210099 - 2⁵ = 1212001210067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212001510099) 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, 63310069 + ... + 63329209.

It is an arithmetic number, because the mean of its divisors is an integer number (78641461440).

Almost surely, 2^{1212001210099} is an apocalyptic number.

1212001210099 is a deficient number, since it is larger than the sum of its proper divisors (46262172941).

1212001210099 is a wasteful number, since it uses less digits than its factorization.

1212001210099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30762.

The product of its (nonzero) digits is 648, while the sum is 28.

The spelling of 1212001210099 in words is "one trillion, two hundred twelve billion, one million, two hundred ten thousand, ninety-nine".