7457220101 has 2 divisors, whose sum is σ = 7457220102. Its totient is φ = 7457220100.

The previous prime is 7457220061. The next prime is 7457220137. The reversal of 7457220101 is 1010227547.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3800599201 + 3656620900 = 61649^2 + 60470^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7457220101 is a prime.

It is a super-2 number, since 2×7457220101² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7457220161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3728610050 + 3728610051.

It is an arithmetic number, because the mean of its divisors is an integer number (3728610051).

Almost surely, 2^7457220101 is an apocalyptic number.

It is an amenable number.

7457220101 is a deficient number, since it is larger than the sum of its proper divisors (1).

7457220101 is an equidigital number, since it uses as much as digits as its factorization.

7457220101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 7457220101 is about 86355.1973016101. The cubic root of 7457220101 is about 1953.7049964671.

Adding to 7457220101 its reverse (1010227547), we get a palindrome (8467447648).

The spelling of 7457220101 in words is "seven billion, four hundred fifty-seven million, two hundred twenty thousand, one hundred one".