2101455143 has 4 divisors (see below), whose sum is σ = 2101611960. Its totient is φ = 2101298328.

The previous prime is 2101455077. The next prime is 2101455173. The reversal of 2101455143 is 3415541012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2101455143 - 2¹⁰ = 2101454119 is a prime.

It is a super-2 number, since 2×2101455143² = 8832227436082300898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101455173) 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, 56213 + ... + 85806.

It is an arithmetic number, because the mean of its divisors is an integer number (525402990).

Almost surely, 2^2101455143 is an apocalyptic number.

2101455143 is a deficient number, since it is larger than the sum of its proper divisors (156817).

2101455143 is a wasteful number, since it uses less digits than its factorization.

2101455143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156816.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 2101455143 is about 45841.6311119053. The cubic root of 2101455143 is about 1280.8748785698.

Adding to 2101455143 its reverse (3415541012), we get a palindrome (5516996155).

The spelling of 2101455143 in words is "two billion, one hundred one million, four hundred fifty-five thousand, one hundred forty-three".