77021000101 has 8 divisors (see below), whose sum is σ = 80143893504. Its totient is φ = 73959946320.

The previous prime is 77021000081. The next prime is 77021000159. The reversal of 77021000101 is 10100012077.

77021000101 = T₂₂₆₅₉₈ + T₂₂₆₅₉₉ + T₂₂₆₆₀₀.

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 77021000101 - 2⁷ = 77020999973 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 (77021000171) 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, 15457365 + ... + 15462346.

It is an arithmetic number, because the mean of its divisors is an integer number (10017986688).

Almost surely, 2^77021000101 is an apocalyptic number.

77021000101 is the 226600-th centered triangular number.

It is an amenable number.

77021000101 is a deficient number, since it is larger than the sum of its proper divisors (3122893403).

77021000101 is a wasteful number, since it uses less digits than its factorization.

77021000101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30919811.

The product of its (nonzero) digits is 98, while the sum is 19.

Adding to 77021000101 its reverse (10100012077), we get a palindrome (87121012178).

The spelling of 77021000101 in words is "seventy-seven billion, twenty-one million, one hundred one", and thus it is an aban number.