20212115151 has 8 divisors (see below), whose sum is σ = 27161688064. Its totient is φ = 13368642840.

The previous prime is 20212115149. The next prime is 20212115173. The reversal of 20212115151 is 15151121202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20212115151 - 2¹ = 20212115149 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 (20212115251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26524705 + ... + 26525466.

It is an arithmetic number, because the mean of its divisors is an integer number (3395211008).

Almost surely, 2^20212115151 is an apocalyptic number.

20212115151 is a deficient number, since it is larger than the sum of its proper divisors (6949572913).

20212115151 is a wasteful number, since it uses less digits than its factorization.

20212115151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53050301.

The product of its (nonzero) digits is 200, while the sum is 21.

Adding to 20212115151 its reverse (15151121202), we get a palindrome (35363236353).

It can be divided in two parts, 202121151 and 51, that added together give a palindrome (202121202).

The spelling of 20212115151 in words is "twenty billion, two hundred twelve million, one hundred fifteen thousand, one hundred fifty-one".