61022001304721 has 16 divisors (see below), whose sum is σ = 66771824140800. Its totient is φ = 55516436087040.

The previous prime is 61022001304697. The next prime is 61022001304757. The reversal of 61022001304721 is 12740310022016.

It is a cyclic number.

It is not a de Polignac number, because 61022001304721 - 2⁶ = 61022001304657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61022001364721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65553371 + ... + 66477728.

It is an arithmetic number, because the mean of its divisors is an integer number (4173239008800).

Almost surely, 2^{61022001304721} is an apocalyptic number.

It is an amenable number.

61022001304721 is a deficient number, since it is larger than the sum of its proper divisors (5749822836079).

61022001304721 is a wasteful number, since it uses less digits than its factorization.

61022001304721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132032024.

The product of its (nonzero) digits is 4032, while the sum is 29.

Adding to 61022001304721 its reverse (12740310022016), we get a palindrome (73762311326737).

The spelling of 61022001304721 in words is "sixty-one trillion, twenty-two billion, one million, three hundred four thousand, seven hundred twenty-one".