1201111001002 has 32 divisors (see below), whose sum is σ = 1978724116800. Its totient is φ = 542285779200.

The previous prime is 1201111000997. The next prime is 1201111001023. The reversal of 1201111001002 is 2001001111021.

It is a self number, because there is not a number n which added to its sum of digits gives 1201111001002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1652274 + ... + 2265442.

It is an arithmetic number, because the mean of its divisors is an integer number (61835128650).

Almost surely, 2^{1201111001002} is an apocalyptic number.

1201111001002 is a deficient number, since it is larger than the sum of its proper divisors (777613115798).

1201111001002 is a wasteful number, since it uses less digits than its factorization.

1201111001002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613782.

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

Adding to 1201111001002 its reverse (2001001111021), we get a palindrome (3202112112023).

The spelling of 1201111001002 in words is "one trillion, two hundred one billion, one hundred eleven million, one thousand, two".