151221511011 has 8 divisors (see below), whose sum is σ = 201648870144. Its totient is φ = 100804246280.

The previous prime is 151221511003. The next prime is 151221511013. The reversal of 151221511011 is 110115122151.

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

It is a cyclic number.

It is not a de Polignac number, because 151221511011 - 2³ = 151221511003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (151221511013) 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, 2488575 + ... + 2548616.

It is an arithmetic number, because the mean of its divisors is an integer number (25206108768).

Almost surely, 2^151221511011 is an apocalyptic number.

151221511011 is a deficient number, since it is larger than the sum of its proper divisors (50427359133).

151221511011 is a wasteful number, since it uses less digits than its factorization.

151221511011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5047201.

The product of its (nonzero) digits is 100, while the sum is 21.

Adding to 151221511011 its reverse (110115122151), we get a palindrome (261336633162).

The spelling of 151221511011 in words is "one hundred fifty-one billion, two hundred twenty-one million, five hundred eleven thousand, eleven".