49101020101 has 4 divisors (see below), whose sum is σ = 56115451552. Its totient is φ = 42086588652.

The previous prime is 49101020093. The next prime is 49101020251. The reversal of 49101020101 is 10102010194.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10102010194 = 2 ⋅5051005097.

It is a cyclic number.

It is not a de Polignac number, because 49101020101 - 2³ = 49101020093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49101000101) 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, 3507215715 + ... + 3507215728.

It is an arithmetic number, because the mean of its divisors is an integer number (14028862888).

Almost surely, 2^49101020101 is an apocalyptic number.

It is an amenable number.

49101020101 is a deficient number, since it is larger than the sum of its proper divisors (7014431451).

49101020101 is an equidigital number, since it uses as much as digits as its factorization.

49101020101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7014431450.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 49101020101 its reverse (10102010194), we get a palindrome (59203030295).

The spelling of 49101020101 in words is "forty-nine billion, one hundred one million, twenty thousand, one hundred one".