101201001977 has 2 divisors, whose sum is σ = 101201001978. Its totient is φ = 101201001976.

The previous prime is 101201001973. The next prime is 101201002037. The reversal of 101201001977 is 779100102101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73942661776 + 27258340201 = 271924^2 + 165101^2 .

It is an emirp because it is prime and its reverse (779100102101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 101201001977 - 2² = 101201001973 is a prime.

It is a super-2 number, since 2×101201001977² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (101201001973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50600500988 + 50600500989.

It is an arithmetic number, because the mean of its divisors is an integer number (50600500989).

Almost surely, 2^101201001977 is an apocalyptic number.

It is an amenable number.

101201001977 is a deficient number, since it is larger than the sum of its proper divisors (1).

101201001977 is an equidigital number, since it uses as much as digits as its factorization.

101201001977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 882, while the sum is 29.

The spelling of 101201001977 in words is "one hundred one billion, two hundred one million, one thousand, nine hundred seventy-seven".