122212211121021 has 64 divisors (see below), whose sum is σ = 188991155404800. Its totient is φ = 68808582081216.

The previous prime is 122212211120999. The next prime is 122212211121149. The reversal of 122212211121021 is 120121112212221.

It is not a de Polignac number, because 122212211121021 - 2¹³ = 122212211112829 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122212211111021) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 262585500 + ... + 263050506.

It is an arithmetic number, because the mean of its divisors is an integer number (2952986803200).

Almost surely, 2^{122212211121021} is an apocalyptic number.

It is an amenable number.

122212211121021 is a deficient number, since it is larger than the sum of its proper divisors (66778944283779).

122212211121021 is a wasteful number, since it uses less digits than its factorization.

122212211121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465838.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 122212211121021 its reverse (120121112212221), we get a palindrome (242333323333242).

The spelling of 122212211121021 in words is "one hundred twenty-two trillion, two hundred twelve billion, two hundred eleven million, one hundred twenty-one thousand, twenty-one".