1201001221996 has 12 divisors (see below), whose sum is σ = 2108382273648. Its totient is φ = 598606286672.

The previous prime is 1201001221963. The next prime is 1201001221997. The reversal of 1201001221996 is 6991221001021.

It is not an unprimeable number, because it can be changed into a prime (1201001221997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473579656 + ... + 473582191.

It is an arithmetic number, because the mean of its divisors is an integer number (175698522804).

Almost surely, 2^{1201001221996} is an apocalyptic number.

It is an amenable number.

1201001221996 is a deficient number, since it is larger than the sum of its proper divisors (907381051652).

1201001221996 is a wasteful number, since it uses less digits than its factorization.

1201001221996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947162168 (or 947162166 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 34.

The spelling of 1201001221996 in words is "one trillion, two hundred one billion, one million, two hundred twenty-one thousand, nine hundred ninety-six".