2120951066 has 16 divisors (see below), whose sum is σ = 3427638984. Its totient is φ = 978475584.

The previous prime is 2120951039. The next prime is 2120951069. The reversal of 2120951066 is 6601590212.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 889292041 + 1231659025 = 29821^2 + 35095^2 .

It is not an unprimeable number, because it can be changed into a prime (2120951069) 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 7 ways as a sum of consecutive naturals, for example, 47936 + ... + 80868.

Almost surely, 2^2120951066 is an apocalyptic number.

2120951066 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2120951066 is a deficient number, since it is larger than the sum of its proper divisors (1306687918).

2120951066 is a wasteful number, since it uses less digits than its factorization.

2120951066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35425.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 2120951066 is about 46053.7844916137. The cubic root of 2120951066 is about 1284.8237311143.

The spelling of 2120951066 in words is "two billion, one hundred twenty million, nine hundred fifty-one thousand, sixty-six".