1020655101 has 16 divisors (see below), whose sum is σ = 1421352000. Its totient is φ = 650821248.

The previous prime is 1020655093. The next prime is 1020655123. The reversal of 1020655101 is 1015560201.

It is not a de Polignac number, because 1020655101 - 2³ = 1020655093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020655301) 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, 71376 + ... + 84473.

It is an arithmetic number, because the mean of its divisors is an integer number (88834500).

Almost surely, 2^1020655101 is an apocalyptic number.

It is an amenable number.

1020655101 is a deficient number, since it is larger than the sum of its proper divisors (400696899).

1020655101 is a wasteful number, since it uses less digits than its factorization.

1020655101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155948.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 1020655101 is about 31947.6932031094. The cubic root of 1020655101 is about 1006.8381665594.

The spelling of 1020655101 in words is "one billion, twenty million, six hundred fifty-five thousand, one hundred one".