102001111201012 has 12 divisors (see below), whose sum is σ = 178557570035460. Its totient is φ = 50984662619456.

The previous prime is 102001111201007. The next prime is 102001111201013. The reversal of 102001111201012 is 210102111100201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21386499698916 + 80614611502096 = 4624554^2 + 8978564^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102001111200983 and 102001111201001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102001111201013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3973230823 + ... + 3973256494.

It is an arithmetic number, because the mean of its divisors is an integer number (14879797502955).

Almost surely, 2^{102001111201012} is an apocalyptic number.

It is an amenable number.

102001111201012 is a deficient number, since it is larger than the sum of its proper divisors (76556458834448).

102001111201012 is a wasteful number, since it uses less digits than its factorization.

102001111201012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7946490530 (or 7946490528 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 102001111201012 its reverse (210102111100201), we get a palindrome (312103222301213).

The spelling of 102001111201012 in words is "one hundred two trillion, one billion, one hundred eleven million, two hundred one thousand, twelve".