2151010101 has 16 divisors (see below), whose sum is σ = 2952911808. Its totient is φ = 1391913600.

The previous prime is 2151010093. The next prime is 2151010109. The reversal of 2151010101 is 1010101512.

It is an interprime number because it is at equal distance from previous prime (2151010093) and next prime (2151010109).

It is not a de Polignac number, because 2151010101 - 2³ = 2151010093 is a prime.

2151010101 is a modest number, since divided by 10101 gives 2151 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151010109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20155 + ... + 68616.

It is an arithmetic number, because the mean of its divisors is an integer number (184556988).

Almost surely, 2^2151010101 is an apocalyptic number.

It is an amenable number.

2151010101 is a deficient number, since it is larger than the sum of its proper divisors (801901707).

2151010101 is a wasteful number, since it uses less digits than its factorization.

2151010101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89012.

The product of its (nonzero) digits is 10, while the sum is 12.

The square root of 2151010101 is about 46378.9833976555. The cubic root of 2151010101 is about 1290.8649730390.

Adding to 2151010101 its reverse (1010101512), we get a palindrome (3161111613).

The spelling of 2151010101 in words is "two billion, one hundred fifty-one million, ten thousand, one hundred one".