121221010210074 has 16 divisors (see below), whose sum is σ = 243231733845408. Its totient is φ = 40275384499152.

The previous prime is 121221010210073. The next prime is 121221010210081. The reversal of 121221010210074 is 470012010122121.

It is a happy number.

It is a super-2 number, since 2×121221010210074² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121221010210073) 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, 32904724057 + ... + 32904727740.

It is an arithmetic number, because the mean of its divisors is an integer number (15201983365338).

Almost surely, 2^{121221010210074} is an apocalyptic number.

121221010210074 is an abundant number, since it is smaller than the sum of its proper divisors (122010723635334).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121221010210074 is a wasteful number, since it uses less digits than its factorization.

121221010210074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65809452109.

The product of its (nonzero) digits is 448, while the sum is 24.

Adding to 121221010210074 its reverse (470012010122121), we get a palindrome (591233020332195).

The spelling of 121221010210074 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, ten million, two hundred ten thousand, seventy-four".