2101021097 has 16 divisors (see below), whose sum is σ = 2476072704. Its totient is φ = 1745280000.

The previous prime is 2101021073. The next prime is 2101021127. The reversal of 2101021097 is 7901201012.

It is a cyclic number.

It is not a de Polignac number, because 2101021097 - 2⁶ = 2101021033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2101026097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19097 + ... + 67577.

It is an arithmetic number, because the mean of its divisors is an integer number (154754544).

Almost surely, 2^2101021097 is an apocalyptic number.

It is an amenable number.

2101021097 is a deficient number, since it is larger than the sum of its proper divisors (375051607).

2101021097 is a wasteful number, since it uses less digits than its factorization.

2101021097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48680.

The product of its (nonzero) digits is 252, while the sum is 23.

The square root of 2101021097 is about 45836.8966772403. The cubic root of 2101021097 is about 1280.7866862045.

The spelling of 2101021097 in words is "two billion, one hundred one million, twenty-one thousand, ninety-seven".