122011211210021 has 8 divisors (see below), whose sum is σ = 140377232457600. Its totient is φ = 103879152016848.

The previous prime is 122011211210003. The next prime is 122011211210039. The reversal of 122011211210021 is 120012112110221.

It is an interprime number because it is at equal distance from previous prime (122011211210003) and next prime (122011211210039).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122011211210021 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 (122011211210221) 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, 58490512481 + ... + 58490514566.

It is an arithmetic number, because the mean of its divisors is an integer number (17547154057200).

Almost surely, 2^{122011211210021} is an apocalyptic number.

It is an amenable number.

122011211210021 is a deficient number, since it is larger than the sum of its proper divisors (18366021247579).

122011211210021 is a wasteful number, since it uses less digits than its factorization.

122011211210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116981027203.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 122011211210021 its reverse (120012112110221), we get a palindrome (242023323320242).

The spelling of 122011211210021 in words is "one hundred twenty-two trillion, eleven billion, two hundred eleven million, two hundred ten thousand, twenty-one".