1021011222545 has 32 divisors (see below), whose sum is σ = 1266706667520. Its totient is φ = 789548800000.

The previous prime is 1021011222541. The next prime is 1021011222547. The reversal of 1021011222545 is 5452221101201.

It is a happy number.

It is not a de Polignac number, because 1021011222545 - 2² = 1021011222541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1021011222541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9775961 + ... + 9879849.

It is an arithmetic number, because the mean of its divisors is an integer number (39584583360).

Almost surely, 2^{1021011222545} is an apocalyptic number.

It is an amenable number.

1021011222545 is a deficient number, since it is larger than the sum of its proper divisors (245695444975).

1021011222545 is a wasteful number, since it uses less digits than its factorization.

1021011222545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104377.

The product of its (nonzero) digits is 1600, while the sum is 26.

Adding to 1021011222545 its reverse (5452221101201), we get a palindrome (6473232323746).

The spelling of 1021011222545 in words is "one trillion, twenty-one billion, eleven million, two hundred twenty-two thousand, five hundred forty-five".