121012010215 has 8 divisors (see below), whose sum is σ = 146652179328. Its totient is φ = 95851096800.

The previous prime is 121012010201. The next prime is 121012010219. The reversal of 121012010215 is 512010210121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121012010215 - 2¹⁵ = 121011977447 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 (121012010219) 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, 119813367 + ... + 119814376.

It is an arithmetic number, because the mean of its divisors is an integer number (18331522416).

Almost surely, 2^121012010215 is an apocalyptic number.

121012010215 is a deficient number, since it is larger than the sum of its proper divisors (25640169113).

121012010215 is a wasteful number, since it uses less digits than its factorization.

121012010215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239627849.

The product of its (nonzero) digits is 40, while the sum is 16.

Adding to 121012010215 its reverse (512010210121), we get a palindrome (633022220336).

The spelling of 121012010215 in words is "one hundred twenty-one billion, twelve million, ten thousand, two hundred fifteen".