7221012051551 has 8 divisors (see below), whose sum is σ = 7227780806400. Its totient is φ = 7214244175872.

The previous prime is 7221012051529. The next prime is 7221012051553. The reversal of 7221012051551 is 1551502101227.

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 7221012051551 - 2²² = 7221007857247 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 (7221012051553) 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, 16832975 + ... + 17256623.

It is an arithmetic number, because the mean of its divisors is an integer number (903472600800).

Almost surely, 2^{7221012051551} is an apocalyptic number.

7221012051551 is a deficient number, since it is larger than the sum of its proper divisors (6768754849).

7221012051551 is a wasteful number, since it uses less digits than its factorization.

7221012051551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439585.

The product of its (nonzero) digits is 7000, while the sum is 32.

Adding to 7221012051551 its reverse (1551502101227), we get a palindrome (8772514152778).

The spelling of 7221012051551 in words is "seven trillion, two hundred twenty-one billion, twelve million, fifty-one thousand, five hundred fifty-one".