121001012102 has 4 divisors (see below), whose sum is σ = 181501518156. Its totient is φ = 60500506050.

The previous prime is 121001012101. The next prime is 121001012117. The reversal of 121001012102 is 201210100121.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121001012101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30250253024 + ... + 30250253027.

It is an arithmetic number, because the mean of its divisors is an integer number (45375379539).

Almost surely, 2^121001012102 is an apocalyptic number.

121001012102 is a deficient number, since it is larger than the sum of its proper divisors (60500506054).

121001012102 is an equidigital number, since it uses as much as digits as its factorization.

121001012102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60500506053.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 121001012102 its reverse (201210100121), we get a palindrome (322211112223).

The spelling of 121001012102 in words is "one hundred twenty-one billion, one million, twelve thousand, one hundred two".