2101219984 has 10 divisors (see below), whose sum is σ = 4071113750. Its totient is φ = 1050609984.

The previous prime is 2101219963. The next prime is 2101219987. The reversal of 2101219984 is 4899121012.

It can be written as a sum of positive squares in only one way, i.e., 1570378384 + 530841600 = 39628^2 + 23040^2 .

It is not an unprimeable number, because it can be changed into a prime (2101219987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65663109 + ... + 65663140.

It is an arithmetic number, because the mean of its divisors is an integer number (407111375).

Almost surely, 2^2101219984 is an apocalyptic number.

It is an amenable number.

2101219984 is a deficient number, since it is larger than the sum of its proper divisors (1969893766).

2101219984 is a wasteful number, since it uses less digits than its factorization.

2101219984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131326257 (or 131326251 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 2101219984 is about 45839.0661335940. The cubic root of 2101219984 is about 1280.8270989011.

The spelling of 2101219984 in words is "two billion, one hundred one million, two hundred nineteen thousand, nine hundred eighty-four".