121573101 has 16 divisors (see below), whose sum is σ = 182157696. Its totient is φ = 71560896.

The previous prime is 121573097. The next prime is 121573117. The reversal of 121573101 is 101375121.

It is a happy number.

It is not a de Polignac number, because 121573101 - 2² = 121573097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121573141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66870 + ... + 68663.

It is an arithmetic number, because the mean of its divisors is an integer number (11384856).

Almost surely, 2^121573101 is an apocalyptic number.

It is an amenable number.

121573101 is a deficient number, since it is larger than the sum of its proper divisors (60584595).

121573101 is a wasteful number, since it uses less digits than its factorization.

121573101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135572.

The product of its (nonzero) digits is 210, while the sum is 21.

The square root of 121573101 is about 11026.0192726115. The cubic root of 121573101 is about 495.3883983597.

The spelling of 121573101 in words is "one hundred twenty-one million, five hundred seventy-three thousand, one hundred one".