1201220001002 has 48 divisors (see below), whose sum is σ = 2108367455040. Its totient is φ = 511780534272.

The previous prime is 1201220000999. The next prime is 1201220001067. The reversal of 1201220001002 is 2001000221021.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12621149 + ... + 12715967.

It is an arithmetic number, because the mean of its divisors is an integer number (43924321980).

Almost surely, 2^{1201220001002} is an apocalyptic number.

1201220001002 is a deficient number, since it is larger than the sum of its proper divisors (907147454038).

1201220001002 is a wasteful number, since it uses less digits than its factorization.

1201220001002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95595 (or 95588 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1201220001002 its reverse (2001000221021), we get a palindrome (3202220222023).

The spelling of 1201220001002 in words is "one trillion, two hundred one billion, two hundred twenty million, one thousand, two".